diff --git a/.editorconfig b/.editorconfig
index f316fa5f..2a1fd196 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -1,15 +1,6 @@
 #
-# Copyright 2016-2018 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 root = true
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index db00d033..e5358424 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -17,17 +17,8 @@ If you are adding a new file it should have a header like below. This
 can be automatically added by running `./mvnw com.mycila:license-maven-plugin:format`.
 
 ```
-/**
- * Copyright 2019 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+/*
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
  ```
diff --git a/.github/workflows/readme_test.yml b/.github/workflows/test_readme.yml
similarity index 94%
rename from .github/workflows/readme_test.yml
rename to .github/workflows/test_readme.yml
index c01f310f..8fd9a001 100644
--- a/.github/workflows/readme_test.yml
+++ b/.github/workflows/test_readme.yml
@@ -1,6 +1,6 @@
-# yamllint --format github .github/workflows/readme_test.yml
+# yamllint --format github .github/workflows/test_readme.yml
 ---
-name: readme_test
+name: test_readme
 
 # These test build commands mentioned in various README.md files.
 #
@@ -13,7 +13,7 @@ on:
     paths-ignore: '**/*.md'
 
 jobs:
-  readme_test:
+  zipkin-dependencies:
     runs-on: ubuntu-22.04  # newest available distribution, aka jellyfish
     steps:
       - name: Checkout Repository
diff --git a/.settings.xml b/.settings.xml
index 93f3548c..ab04d7f5 100644
--- a/.settings.xml
+++ b/.settings.xml
@@ -1,17 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright 2016-2020 The OpenZipkin Authors
-
-    Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-    in compliance with the License. You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing, software distributed under the License
-    is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-    or implied. See the License for the specific language governing permissions and limitations under
-    the License.
+    Copyright The OpenZipkin Authors
+    SPDX-License-Identifier: Apache-2.0
 
 -->
 <settings xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
diff --git a/RELEASE.md b/RELEASE.md
index 7e59bf00..6aa5530b 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -45,23 +45,6 @@ Here's an example of a snapshot deploy with specified credentials.
 $ export GPG_TTY=$(tty) && GPG_PASSPHRASE=whackamole SONATYPE_USER=adrianmole SONATYPE_PASSWORD=ed6f20bde9123bbb2312b221 build-bin/build-bin/maven/maven_deploy
 ```
 
-## First release of the year
-
-The license plugin verifies license headers of files include a copyright notice indicating the years a file was affected.
-This information is taken from git history. There's a once-a-year problem with files that include version numbers (pom.xml).
-When a release tag is made, it increments version numbers, then commits them to git. On the first release of the year,
-further commands will fail due to the version increments invalidating the copyright statement. The way to sort this out is
-the following:
-
-Before you do the first release of the year, move the SNAPSHOT version back and forth from whatever the current is.
-In-between, re-apply the licenses.
-```bash
-$ ./mvnw versions:set -DnewVersion=1.3.3-SNAPSHOT -DgenerateBackupPoms=false
-$ ./mvnw com.mycila:license-maven-plugin:format
-$ ./mvnw versions:set -DnewVersion=1.3.2-SNAPSHOT -DgenerateBackupPoms=false
-$ git commit -am"Adjusts copyright headers for this year"
-```
-
 ## Manually releasing
 
 If for some reason, you lost access to CI or otherwise cannot get automation to work, bear in mind
diff --git a/build-bin/docker/configure_docker b/build-bin/docker/configure_docker
index d355d8f9..476ca70f 100755
--- a/build-bin/docker/configure_docker
+++ b/build-bin/docker/configure_docker
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2023 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # Defends against build outages caused by Docker Hub (docker.io) pull rate limits.
diff --git a/build-bin/docker/configure_docker_push b/build-bin/docker/configure_docker_push
index 0a9451f5..c08d5cd0 100755
--- a/build-bin/docker/configure_docker_push
+++ b/build-bin/docker/configure_docker_push
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2023 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # Ensures Docker is logged in and it can build multi-architecture.
diff --git a/build-bin/docker/docker_arch b/build-bin/docker/docker_arch
index b00f84c0..70e091af 100755
--- a/build-bin/docker/docker_arch
+++ b/build-bin/docker/docker_arch
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2023 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # This script gets a normalized name for the architecture as used in Docker. This will be a subset
diff --git a/build-bin/docker/docker_args b/build-bin/docker/docker_args
index cf88c6da..7cd78f72 100755
--- a/build-bin/docker/docker_args
+++ b/build-bin/docker/docker_args
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2024 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # This builds common docker arguments used by docker_build and docker_push.
diff --git a/build-bin/docker/docker_build b/build-bin/docker/docker_build
index d7a33157..cf7363f3 100755
--- a/build-bin/docker/docker_build
+++ b/build-bin/docker/docker_build
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2023 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 set -ue
diff --git a/build-bin/docker/docker_push b/build-bin/docker/docker_push
index a3c4b77a..6aaa3742 100755
--- a/build-bin/docker/docker_push
+++ b/build-bin/docker/docker_push
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2023 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # This script pushes images to GitHub Container Registry (ghcr.io).
diff --git a/build-bin/git/login_git b/build-bin/git/login_git
index 825e8490..423d7701 100755
--- a/build-bin/git/login_git
+++ b/build-bin/git/login_git
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2020 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 set -ue
diff --git a/build-bin/git/version_from_trigger_tag b/build-bin/git/version_from_trigger_tag
index 5534d40c..61338762 100755
--- a/build-bin/git/version_from_trigger_tag
+++ b/build-bin/git/version_from_trigger_tag
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2020 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # This script echos a `MAJOR.MINOR.PATCH` version tag based on..
diff --git a/build-bin/gpg/configure_gpg b/build-bin/gpg/configure_gpg
index 4854f5d2..b7568026 100755
--- a/build-bin/gpg/configure_gpg
+++ b/build-bin/gpg/configure_gpg
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2020 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # This script prepares GPG, needed to sign jars for Sonatype deployment during `maven_deploy`
diff --git a/build-bin/maven/maven_build b/build-bin/maven/maven_build
index b7390b37..56660a48 100755
--- a/build-bin/maven/maven_build
+++ b/build-bin/maven/maven_build
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2024 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 set -ue
diff --git a/build-bin/maven/maven_build_or_unjar b/build-bin/maven/maven_build_or_unjar
index 69067a49..8c4920d2 100755
--- a/build-bin/maven/maven_build_or_unjar
+++ b/build-bin/maven/maven_build_or_unjar
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2024 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 set -ue
diff --git a/build-bin/maven/maven_deploy b/build-bin/maven/maven_deploy
index f40343ef..c90d2fca 100755
--- a/build-bin/maven/maven_deploy
+++ b/build-bin/maven/maven_deploy
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2024 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 set -ue
diff --git a/build-bin/maven/maven_go_offline b/build-bin/maven/maven_go_offline
index b4b403f5..1ce82586 100755
--- a/build-bin/maven/maven_go_offline
+++ b/build-bin/maven/maven_go_offline
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2024 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # This is a go-offline that properly works with multi-module builds
diff --git a/build-bin/maven/maven_opts b/build-bin/maven/maven_opts
index 3ebbccd6..901f6ac1 100755
--- a/build-bin/maven/maven_opts
+++ b/build-bin/maven/maven_opts
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2024 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # This script checks each variable value, so it isn't important to fail on unbound (set -u)
diff --git a/build-bin/maven/maven_release b/build-bin/maven/maven_release
index a138c083..df4cdf6a 100755
--- a/build-bin/maven/maven_release
+++ b/build-bin/maven/maven_release
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2024 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 set -ue
diff --git a/build-bin/maven/maven_unjar b/build-bin/maven/maven_unjar
index 97894db8..624742ce 100755
--- a/build-bin/maven/maven_unjar
+++ b/build-bin/maven/maven_unjar
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2024 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # This script gets one jar from Maven, most typically an exec or module jar, extracting its contents
diff --git a/cassandra3/pom.xml b/cassandra3/pom.xml
index d01069d9..1c9db1e4 100644
--- a/cassandra3/pom.xml
+++ b/cassandra3/pom.xml
@@ -1,17 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright 2016-2024 The OpenZipkin Authors
-
-    Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-    in compliance with the License. You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing, software distributed under the License
-    is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-    or implied. See the License for the specific language governing permissions and limitations under
-    the License.
+    Copyright The OpenZipkin Authors
+    SPDX-License-Identifier: Apache-2.0
 
 -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
diff --git a/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/CassandraDependenciesJob.java b/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/CassandraDependenciesJob.java
index dc0c43fa..252fcfc2 100644
--- a/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/CassandraDependenciesJob.java
+++ b/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/CassandraDependenciesJob.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2023 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies.cassandra3;
 
diff --git a/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/CassandraRowToSpan.java b/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/CassandraRowToSpan.java
index 459ff36d..c97740af 100644
--- a/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/CassandraRowToSpan.java
+++ b/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/CassandraRowToSpan.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2020 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies.cassandra3;
 
diff --git a/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/CassandraRowsToDependencyLinks.java b/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/CassandraRowsToDependencyLinks.java
index 0955e601..b1a5adee 100644
--- a/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/CassandraRowsToDependencyLinks.java
+++ b/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/CassandraRowsToDependencyLinks.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2023 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies.cassandra3;
 
diff --git a/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/SpansToDependencyLinks.java b/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/SpansToDependencyLinks.java
index a62bf17b..820c7224 100644
--- a/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/SpansToDependencyLinks.java
+++ b/cassandra3/src/main/java/zipkin2/dependencies/cassandra3/SpansToDependencyLinks.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2023 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies.cassandra3;
 
diff --git a/cassandra3/src/test/java/zipkin2/dependencies/cassandra3/CassandraDependenciesJobTest.java b/cassandra3/src/test/java/zipkin2/dependencies/cassandra3/CassandraDependenciesJobTest.java
index 1a0c0ad4..8f1f1ae1 100644
--- a/cassandra3/src/test/java/zipkin2/dependencies/cassandra3/CassandraDependenciesJobTest.java
+++ b/cassandra3/src/test/java/zipkin2/dependencies/cassandra3/CassandraDependenciesJobTest.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2020 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies.cassandra3;
 
diff --git a/cassandra3/src/test/java/zipkin2/storage/cassandra/CassandraContainer.java b/cassandra3/src/test/java/zipkin2/storage/cassandra/CassandraContainer.java
index 85808976..26196614 100644
--- a/cassandra3/src/test/java/zipkin2/storage/cassandra/CassandraContainer.java
+++ b/cassandra3/src/test/java/zipkin2/storage/cassandra/CassandraContainer.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.storage.cassandra;
 
diff --git a/cassandra3/src/test/java/zipkin2/storage/cassandra/ITCassandraDependencies.java b/cassandra3/src/test/java/zipkin2/storage/cassandra/ITCassandraDependencies.java
index 3bbefe37..293d9e03 100644
--- a/cassandra3/src/test/java/zipkin2/storage/cassandra/ITCassandraDependencies.java
+++ b/cassandra3/src/test/java/zipkin2/storage/cassandra/ITCassandraDependencies.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.storage.cassandra;
 
diff --git a/cassandra3/src/test/java/zipkin2/storage/cassandra/ITCassandraDependenciesHeavy.java b/cassandra3/src/test/java/zipkin2/storage/cassandra/ITCassandraDependenciesHeavy.java
index 9baed59c..e1764d07 100644
--- a/cassandra3/src/test/java/zipkin2/storage/cassandra/ITCassandraDependenciesHeavy.java
+++ b/cassandra3/src/test/java/zipkin2/storage/cassandra/ITCassandraDependenciesHeavy.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.storage.cassandra;
 
diff --git a/docker/Dockerfile b/docker/Dockerfile
index fa012f9a..544de553 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,15 +1,6 @@
 #
-# Copyright 2016-2024 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # java_version is used during the installation process to build or download the module jar.
diff --git a/docker/bin/start-zipkin-dependencies b/docker/bin/start-zipkin-dependencies
index 0c6c185e..93239680 100755
--- a/docker/bin/start-zipkin-dependencies
+++ b/docker/bin/start-zipkin-dependencies
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2020 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # ENTRYPOINT script that runs the dependencies job on-demand, processing today's spans unless CLI
diff --git a/docker/examples/docker-compose-cassandra3.yml b/docker/examples/docker-compose-cassandra3.yml
index a4625cf6..67ac0a07 100644
--- a/docker/examples/docker-compose-cassandra3.yml
+++ b/docker/examples/docker-compose-cassandra3.yml
@@ -1,15 +1,6 @@
 #
-# Copyright 2016-2023 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # This file uses the version 2 docker-compose file format, described here:
diff --git a/docker/examples/docker-compose-elasticsearch.yml b/docker/examples/docker-compose-elasticsearch.yml
index 33ef3f20..225e9c49 100644
--- a/docker/examples/docker-compose-elasticsearch.yml
+++ b/docker/examples/docker-compose-elasticsearch.yml
@@ -1,15 +1,6 @@
 #
-# Copyright 2016-2023 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # This file uses the version 2 docker-compose file format, described here:
diff --git a/docker/examples/docker-compose-mysql.yml b/docker/examples/docker-compose-mysql.yml
index 073cd122..a03d1060 100644
--- a/docker/examples/docker-compose-mysql.yml
+++ b/docker/examples/docker-compose-mysql.yml
@@ -1,15 +1,6 @@
 #
-# Copyright 2016-2023 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # This file uses the version 2 docker-compose file format, described here:
diff --git a/docker/examples/docker-compose.yml b/docker/examples/docker-compose.yml
index 9b349956..edb91ee4 100644
--- a/docker/examples/docker-compose.yml
+++ b/docker/examples/docker-compose.yml
@@ -1,15 +1,6 @@
 #
-# Copyright 2016-2023 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # This file uses the version 2 docker-compose file format, described here:
diff --git a/docker/periodic/daily/zipkin-dependencies-yesterday b/docker/periodic/daily/zipkin-dependencies-yesterday
index aae4efd8..e58ae62a 100755
--- a/docker/periodic/daily/zipkin-dependencies-yesterday
+++ b/docker/periodic/daily/zipkin-dependencies-yesterday
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2023 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 cd /zipkin-dependencies
diff --git a/docker/periodic/hourly/zipkin-dependencies-today b/docker/periodic/hourly/zipkin-dependencies-today
index ed775202..66a6a1a3 100755
--- a/docker/periodic/hourly/zipkin-dependencies-today
+++ b/docker/periodic/hourly/zipkin-dependencies-today
@@ -1,16 +1,7 @@
 #!/bin/sh
 #
-# Copyright 2016-2023 The OpenZipkin Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-# in compliance with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software distributed under the License
-# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-# or implied. See the License for the specific language governing permissions and limitations under
-# the License.
+# Copyright The OpenZipkin Authors
+# SPDX-License-Identifier: Apache-2.0
 #
 
 cd /zipkin-dependencies
diff --git a/elasticsearch/pom.xml b/elasticsearch/pom.xml
index 646ffad8..e84c16c1 100644
--- a/elasticsearch/pom.xml
+++ b/elasticsearch/pom.xml
@@ -1,17 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright 2016-2024 The OpenZipkin Authors
-
-    Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-    in compliance with the License. You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing, software distributed under the License
-    is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-    or implied. See the License for the specific language governing permissions and limitations under
-    the License.
+    Copyright The OpenZipkin Authors
+    SPDX-License-Identifier: Apache-2.0
 
 -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
diff --git a/elasticsearch/src/main/java/zipkin2/dependencies/elasticsearch/ElasticsearchDependenciesJob.java b/elasticsearch/src/main/java/zipkin2/dependencies/elasticsearch/ElasticsearchDependenciesJob.java
index b094b2d0..264617e4 100644
--- a/elasticsearch/src/main/java/zipkin2/dependencies/elasticsearch/ElasticsearchDependenciesJob.java
+++ b/elasticsearch/src/main/java/zipkin2/dependencies/elasticsearch/ElasticsearchDependenciesJob.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies.elasticsearch;
 
diff --git a/elasticsearch/src/main/java/zipkin2/dependencies/elasticsearch/TraceIdAndJsonToDependencyLinks.java b/elasticsearch/src/main/java/zipkin2/dependencies/elasticsearch/TraceIdAndJsonToDependencyLinks.java
index 6f4159bc..b8c95ab6 100644
--- a/elasticsearch/src/main/java/zipkin2/dependencies/elasticsearch/TraceIdAndJsonToDependencyLinks.java
+++ b/elasticsearch/src/main/java/zipkin2/dependencies/elasticsearch/TraceIdAndJsonToDependencyLinks.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2023 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies.elasticsearch;
 
diff --git a/elasticsearch/src/main/java/zipkin2/dependencies/elasticsearch/package-info.java b/elasticsearch/src/main/java/zipkin2/dependencies/elasticsearch/package-info.java
index a81111f4..f79ba211 100644
--- a/elasticsearch/src/main/java/zipkin2/dependencies/elasticsearch/package-info.java
+++ b/elasticsearch/src/main/java/zipkin2/dependencies/elasticsearch/package-info.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2019 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 @javax.annotation.ParametersAreNonnullByDefault
 package zipkin2.dependencies.elasticsearch;
diff --git a/elasticsearch/src/test/java/zipkin2/dependencies/elasticsearch/ElasticsearchDependenciesJobTest.java b/elasticsearch/src/test/java/zipkin2/dependencies/elasticsearch/ElasticsearchDependenciesJobTest.java
index c87872db..f53abf02 100644
--- a/elasticsearch/src/test/java/zipkin2/dependencies/elasticsearch/ElasticsearchDependenciesJobTest.java
+++ b/elasticsearch/src/test/java/zipkin2/dependencies/elasticsearch/ElasticsearchDependenciesJobTest.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2023 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies.elasticsearch;
 
diff --git a/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ElasticsearchContainer.java b/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ElasticsearchContainer.java
index dafd6145..e65a3bc0 100644
--- a/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ElasticsearchContainer.java
+++ b/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ElasticsearchContainer.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.storage.elasticsearch;
 
diff --git a/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesHeavyV7.java b/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesHeavyV7.java
index f01ba8f8..af9cf239 100644
--- a/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesHeavyV7.java
+++ b/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesHeavyV7.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.storage.elasticsearch;
 
diff --git a/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesHeavyV8.java b/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesHeavyV8.java
index 937d5da7..a96a58be 100644
--- a/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesHeavyV8.java
+++ b/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesHeavyV8.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.storage.elasticsearch;
 
diff --git a/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesV7.java b/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesV7.java
index f1d8a918..e407546a 100644
--- a/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesV7.java
+++ b/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesV7.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.storage.elasticsearch;
 
diff --git a/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesV8.java b/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesV8.java
index 073e90f8..c5674845 100644
--- a/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesV8.java
+++ b/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/ITElasticsearchDependenciesV8.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.storage.elasticsearch;
 
diff --git a/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/IgnoredDeprecationWarnings.java b/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/IgnoredDeprecationWarnings.java
index e373c19b..ea3f632e 100644
--- a/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/IgnoredDeprecationWarnings.java
+++ b/elasticsearch/src/test/java/zipkin2/storage/elasticsearch/IgnoredDeprecationWarnings.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.storage.elasticsearch;
 
diff --git a/main/pom.xml b/main/pom.xml
index d48d4649..e7f38ee8 100644
--- a/main/pom.xml
+++ b/main/pom.xml
@@ -1,17 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright 2016-2024 The OpenZipkin Authors
-
-    Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-    in compliance with the License. You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing, software distributed under the License
-    is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-    or implied. See the License for the specific language governing permissions and limitations under
-    the License.
+    Copyright The OpenZipkin Authors
+    SPDX-License-Identifier: Apache-2.0
 
 -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
diff --git a/main/src/main/java/zipkin2/dependencies/LogInitializer.java b/main/src/main/java/zipkin2/dependencies/LogInitializer.java
index 732d1448..70a13366 100644
--- a/main/src/main/java/zipkin2/dependencies/LogInitializer.java
+++ b/main/src/main/java/zipkin2/dependencies/LogInitializer.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2019 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies;
 
diff --git a/main/src/main/java/zipkin2/dependencies/ZipkinDependenciesJob.java b/main/src/main/java/zipkin2/dependencies/ZipkinDependenciesJob.java
index f070a333..7265d1cd 100644
--- a/main/src/main/java/zipkin2/dependencies/ZipkinDependenciesJob.java
+++ b/main/src/main/java/zipkin2/dependencies/ZipkinDependenciesJob.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2020 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies;
 
diff --git a/main/src/main/java/zipkin2/dependencies/package-info.java b/main/src/main/java/zipkin2/dependencies/package-info.java
index ba55d0e3..9daaa768 100644
--- a/main/src/main/java/zipkin2/dependencies/package-info.java
+++ b/main/src/main/java/zipkin2/dependencies/package-info.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2019 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 @javax.annotation.ParametersAreNonnullByDefault
 package zipkin2.dependencies;
diff --git a/main/src/test/java/zipkin2/dependencies/ZipkinDependenciesJobTest.java b/main/src/test/java/zipkin2/dependencies/ZipkinDependenciesJobTest.java
index 28346a53..44faca57 100644
--- a/main/src/test/java/zipkin2/dependencies/ZipkinDependenciesJobTest.java
+++ b/main/src/test/java/zipkin2/dependencies/ZipkinDependenciesJobTest.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2020 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies;
 
diff --git a/mysql/pom.xml b/mysql/pom.xml
index f9f18dc1..e6edec55 100644
--- a/mysql/pom.xml
+++ b/mysql/pom.xml
@@ -1,17 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright 2016-2024 The OpenZipkin Authors
-
-    Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-    in compliance with the License. You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing, software distributed under the License
-    is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-    or implied. See the License for the specific language governing permissions and limitations under
-    the License.
+    Copyright The OpenZipkin Authors
+    SPDX-License-Identifier: Apache-2.0
 
 -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
diff --git a/mysql/src/main/java/zipkin2/dependencies/mysql/DependencyLinkSpanIterator.java b/mysql/src/main/java/zipkin2/dependencies/mysql/DependencyLinkSpanIterator.java
index d564b654..3293cf98 100644
--- a/mysql/src/main/java/zipkin2/dependencies/mysql/DependencyLinkSpanIterator.java
+++ b/mysql/src/main/java/zipkin2/dependencies/mysql/DependencyLinkSpanIterator.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2019 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies.mysql;
 
diff --git a/mysql/src/main/java/zipkin2/dependencies/mysql/MySQLDependenciesJob.java b/mysql/src/main/java/zipkin2/dependencies/mysql/MySQLDependenciesJob.java
index 0b3f4071..495c8d25 100644
--- a/mysql/src/main/java/zipkin2/dependencies/mysql/MySQLDependenciesJob.java
+++ b/mysql/src/main/java/zipkin2/dependencies/mysql/MySQLDependenciesJob.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2023 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies.mysql;
 
diff --git a/mysql/src/main/java/zipkin2/dependencies/mysql/PeekingIterator.java b/mysql/src/main/java/zipkin2/dependencies/mysql/PeekingIterator.java
index 3b27ae71..702e93db 100644
--- a/mysql/src/main/java/zipkin2/dependencies/mysql/PeekingIterator.java
+++ b/mysql/src/main/java/zipkin2/dependencies/mysql/PeekingIterator.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2019 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies.mysql;
 
diff --git a/mysql/src/main/java/zipkin2/dependencies/mysql/RowsToDependencyLinks.java b/mysql/src/main/java/zipkin2/dependencies/mysql/RowsToDependencyLinks.java
index 3fb1cbff..6caadc1a 100644
--- a/mysql/src/main/java/zipkin2/dependencies/mysql/RowsToDependencyLinks.java
+++ b/mysql/src/main/java/zipkin2/dependencies/mysql/RowsToDependencyLinks.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2023 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.dependencies.mysql;
 
diff --git a/mysql/src/main/java/zipkin2/dependencies/mysql/package-info.java b/mysql/src/main/java/zipkin2/dependencies/mysql/package-info.java
index c0abe145..50bb0d81 100644
--- a/mysql/src/main/java/zipkin2/dependencies/mysql/package-info.java
+++ b/mysql/src/main/java/zipkin2/dependencies/mysql/package-info.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2019 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 @javax.annotation.ParametersAreNonnullByDefault
 package zipkin2.dependencies.mysql;
diff --git a/mysql/src/test/java/zipkin2/storage/mysql/v1/ITMySQLDependencies.java b/mysql/src/test/java/zipkin2/storage/mysql/v1/ITMySQLDependencies.java
index e2c6a3e2..c33c278a 100644
--- a/mysql/src/test/java/zipkin2/storage/mysql/v1/ITMySQLDependencies.java
+++ b/mysql/src/test/java/zipkin2/storage/mysql/v1/ITMySQLDependencies.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.storage.mysql.v1;
 
diff --git a/mysql/src/test/java/zipkin2/storage/mysql/v1/ITMySQLDependenciesHeavy.java b/mysql/src/test/java/zipkin2/storage/mysql/v1/ITMySQLDependenciesHeavy.java
index 47b65e0e..647d48e6 100644
--- a/mysql/src/test/java/zipkin2/storage/mysql/v1/ITMySQLDependenciesHeavy.java
+++ b/mysql/src/test/java/zipkin2/storage/mysql/v1/ITMySQLDependenciesHeavy.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.storage.mysql.v1;
 
diff --git a/mysql/src/test/java/zipkin2/storage/mysql/v1/MySQLContainer.java b/mysql/src/test/java/zipkin2/storage/mysql/v1/MySQLContainer.java
index 6a3a29af..8965052c 100644
--- a/mysql/src/test/java/zipkin2/storage/mysql/v1/MySQLContainer.java
+++ b/mysql/src/test/java/zipkin2/storage/mysql/v1/MySQLContainer.java
@@ -1,15 +1,6 @@
 /*
- * Copyright 2016-2024 The OpenZipkin Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
+ * Copyright The OpenZipkin Authors
+ * SPDX-License-Identifier: Apache-2.0
  */
 package zipkin2.storage.mysql.v1;
 
diff --git a/pom.xml b/pom.xml
index 19fb51d0..60d1ffce 100755
--- a/pom.xml
+++ b/pom.xml
@@ -1,17 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright 2016-2024 The OpenZipkin Authors
-
-    Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-    in compliance with the License. You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing, software distributed under the License
-    is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-    or implied. See the License for the specific language governing permissions and limitations under
-    the License.
+    Copyright The OpenZipkin Authors
+    SPDX-License-Identifier: Apache-2.0
 
 -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
diff --git a/src/etc/header.txt b/src/etc/header.txt
index 6dba3bdf..fe602a38 100644
--- a/src/etc/header.txt
+++ b/src/etc/header.txt
@@ -1,11 +1,2 @@
-Copyright ${license.git.copyrightYears} The OpenZipkin Authors
-
-Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
-in compliance with the License. You may obtain a copy of the License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software distributed under the License
-is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-or implied. See the License for the specific language governing permissions and limitations under
-the License.
+Copyright The OpenZipkin Authors
+SPDX-License-Identifier: Apache-2.0