diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 35dc8f6..eabb854 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -32,7 +32,7 @@ jobs:
         uses: actions/cache@v3
         with:
           path: /tmp/.buildx-cache
-          key: ${{ runner.os }}-buildx-${{ hashFiles('Dockerfile') }}
+          key: ${{ runner.os }}-buildx-${{ hashFiles('**/Dockerfile') }}
           restore-keys: ${{ runner.os }}-buildx-
 
       - name: Startup Nitro testnode