diff --git a/.github/workflows/build_test.yml b/.github/workflows/build_test.yml
index 1281696..7478e13 100644
--- a/.github/workflows/build_test.yml
+++ b/.github/workflows/build_test.yml
@@ -16,7 +16,7 @@ jobs:
   build:
     strategy:
       matrix:
-        php_version: ['8.1', '8.2', '8.3']
+        php_version: ['8.1', '8.2', '8.3', '8.4']
         deps: ['--prefer-lowest --prefer-dist', '']
         include:
           - code-coverage: 'yes'