diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 582c515d..0cf65d52 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -47,6 +47,7 @@ jobs:
         php-version:
           - "8.1"
           - "8.2"
+          - "8.3"
         operating-system:
           - "ubuntu-latest"
 
@@ -99,6 +100,7 @@ jobs:
         php-version:
           - "8.1"
           - "8.2"
+          - "8.3"
         operating-system:
           - "ubuntu-latest"
 
diff --git a/composer.json b/composer.json
index 7b6e7d70..5e135e08 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
     "name": "roave/backward-compatibility-check",
     "description": "Tool to compare two revisions of a public API to check for BC breaks",
     "require": {
-        "php": "~8.1.0 || ~8.2.0",
+        "php": "~8.1.0 || ~8.2.0 || ~8.3.0",
         "ext-json": "*",
         "azjezz/psl": "^2.3.1",
         "composer/composer": "^2.5.1",
diff --git a/composer.lock b/composer.lock
index 3414ab80..ad242b48 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "693345b309b1c7f7cfbbd05ebec0469b",
+    "content-hash": "32e8d817b05bb7d73cb1a086bba6c6f5",
     "packages": [
         {
             "name": "azjezz/psl",