diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 45d35dc..dda9557 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -32,7 +32,7 @@ jobs:
       ###### Required to build OIDC App ######
 
       - name: Set up php 8.4
-        uses: shivammathur/setup-php@v2
+        uses: shivammathur/setup-php@bf6b4fbd49ca58e4608c9c89fba0b8d90bd2a39f # v2
         with:
           php-version: 8.4
           coverage: none