diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6d21fee..9ddc955 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -80,7 +80,7 @@ jobs:
               uses: actions/cache@v3
               with:
                   path: ${{ steps.composer-cache.outputs.dir }}
-                  key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+                  key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
                   restore-keys: ${{ runner.os }}-composer-
 
             - name: "Install dependencies with composer"