diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index aa256ed..fa51efc 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,6 +13,7 @@ jobs:
         php:
           - '8.2'
           - '8.3'
+          - '8.4'
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/Build/Scripts/runTests.sh b/Build/Scripts/runTests.sh
index f555569..0fe1760 100755
--- a/Build/Scripts/runTests.sh
+++ b/Build/Scripts/runTests.sh
@@ -59,10 +59,11 @@ Options:
 
         If not specified, podman will be used if available. Otherwise, docker is used.
 
-    -p <8.2|8.3>
+    -p <8.2|8.3|8.4>
         Specifies the PHP minor version to be used
             - 8.2: (default) use PHP 8.2
             - 8.3: use PHP 8.3
+            - 8.4: use PHP 8.4
     -n
         Only with -s cgl, composerNormalize, rector
         Activate dry-run in CGL check and composer normalize that does not actively change files and only prints broken ones.
@@ -117,7 +118,7 @@ while getopts "b:s:p:xy:nhu" OPT; do
             ;;
         p)
             PHP_VERSION=${OPTARG}
-            if ! [[ ${PHP_VERSION} =~ ^(8.2|8.3)$ ]]; then
+            if ! [[ ${PHP_VERSION} =~ ^(8.2|8.3|8.4)$ ]]; then
                 INVALID_OPTIONS+=("p ${OPTARG}")
             fi
             ;;