diff --git a/actions/phive/install/action.yml b/actions/phive/install/action.yml
index 64965f6..cab321d 100644
--- a/actions/phive/install/action.yml
+++ b/actions/phive/install/action.yml
@@ -33,7 +33,7 @@ runs:
       uses: actions/cache@v4.0.2
       with:
         path: ${{ inputs.phive-home }}
-        key: phive-hashFiles('**/phars.xml')
+        key: phive-${{ hashFiles('**/phars.xml') }}
         restore-keys: phive-
 
     - name: ⚙️ Install dependencies with phive