diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
index 610cafede..8c581d8a9 100644
--- a/.github/workflows/phpstan.yml
+++ b/.github/workflows/phpstan.yml
@@ -36,9 +36,8 @@ jobs:
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
           # Use composer.json for key, if composer.lock is not committed.
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
-          #key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
-          restore-keys: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
 
       - name: "Install composer dependencies"
         run: "composer install"