diff --git a/.github/actions/setup-tooling/action.yml b/.github/actions/setup-tooling/action.yml
index 455d8a9..2e5294c 100644
--- a/.github/actions/setup-tooling/action.yml
+++ b/.github/actions/setup-tooling/action.yml
@@ -19,7 +19,7 @@ runs:
       id: extension-cache-hash
       env:
         PHP_EXTENSIONS: ${{ inputs.php-extensions }}
-      run: echo hash=$(md5sum >> $PHP_EXTENSIONS) >> $GITHUB_OUTPUT
+      run: echo hash=$(echo $PHP_EXTENSIONS | md5sum) >> $GITHUB_OUTPUT
       shell: bash
 
     - name: Setup cache environment