diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 37f7001..6870e0e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: ["5.6", "7.0", "7.1", "7.2", "7.3", "7.4", "8.0", "8.1", "8.2"]
+        php: ["5.6", "7.0", "7.1", "7.2", "7.3", "7.4", "8.0", "8.1", "8.2", "8.3"]
 
     name: PHP ${{ matrix.php }}/Linux