diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index c356f423..a842dcf8 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -20,7 +20,18 @@ jobs:
     - name: Checkout source code
       uses: actions/checkout@v4
 
-    - name: Validate licenses
+    - name: Validate license (pull request)
+      if: github.event_name == 'pull_request'
+      working-directory: ${{github.workspace}}
+      run: |
+        git diff --name-only ${{ github.event.base_ref }} ${{ github.event.head_ref }} \
+            | sed -E 's/\.license$//' \
+            | sort -u \
+            | xargs -d '\n' ls -1d 2>/dev/null \
+            | xargs -d '\n' python3 -m pipx run reuse lint-files --
+
+    - name: Validate licenses (push)
+      if: github.event_name == 'push'
       working-directory: ${{github.workspace}}
       run: |
         python3 -m pipx run reuse lint
diff --git a/.reuse/dep5 b/.reuse/dep5
deleted file mode 100644
index fe5fe066..00000000
--- a/.reuse/dep5
+++ /dev/null
@@ -1,26 +0,0 @@
-Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
-Upstream-Name: Celestia Content
-Upstream-Contact: Celestia Development Team
-Source: https://github.com/CelestiaProject/CelestiaContent
-
-Files: README
-Copyright: Celestia Development Team
-License: GPL-2.0-or-later
-
-Files: .github/*
-Copyright: Celestia Development Team
-License: GPL-2.0-or-later
-
-Files: debian/*
-Copyright: 2001-2002 Marcelo E. Magallon <mmagallo@debian.org>
-           2003 Mika Fischer <mf@debian.org>
-           2005 Mathias Weyland <mathias@weyland.ch>
-           2007-2013 Guus Sliepen <guus@debian.org>
-           2019 Celestia Development Team
-License: GPL-2.0-or-later
-
-# Sample paragraph, commented out:
-#
-# Files: src/*
-# Copyright: $YEAR $NAME <$CONTACT>
-# License: ...
diff --git a/REUSE.toml b/REUSE.toml
new file mode 100644
index 00000000..0e60a3e9
--- /dev/null
+++ b/REUSE.toml
@@ -0,0 +1,22 @@
+version = 1
+SPDX-PackageName = "Celestia Content"
+SPDX-PackageSupplier = "Celestia Development Team"
+SPDX-PackageDownloadLocation = "https://github.com/CelestiaProject/CelestiaContent"
+
+[[annotations]]
+path = "README"
+precedence = "aggregate"
+SPDX-FileCopyrightText = "Celestia Development Team"
+SPDX-License-Identifier = "GPL-2.0-or-later"
+
+[[annotations]]
+path = ".github/**"
+precedence = "aggregate"
+SPDX-FileCopyrightText = "Celestia Development Team"
+SPDX-License-Identifier = "GPL-2.0-or-later"
+
+[[annotations]]
+path = "debian/**"
+precedence = "aggregate"
+SPDX-FileCopyrightText = ["2001-2002 Marcelo E. Magallon <mmagallo@debian.org>", "2003 Mika Fischer <mf@debian.org>", "2005 Mathias Weyland <mathias@weyland.ch>", "2007-2013 Guus Sliepen <guus@debian.org>", "2019 Celestia Development Team"]
+SPDX-License-Identifier = "GPL-2.0-or-later"