diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 98d6e48..d536974 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -9,7 +9,7 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-latest]
-        php: [8.1, 8.2]
+        php: [8.1, 8.2, 8.3]
         stability: [prefer-lowest, prefer-stable]
 
     name: P${{ matrix.php }} - ${{ matrix.stability }} - ${{ matrix.os }}