diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml
index 9319bf49c..bc48ffdbd 100644
--- a/.github/workflows/e2e.yml
+++ b/.github/workflows/e2e.yml
@@ -68,9 +68,9 @@ jobs:
         uses: actions/cache@v2
         with:
           path: .turbo
-          key: turbo-${{ github.job }}-${{ github.ref_name }}-${{ github.sha }}
+          key: turbo-${{ github.job }}-${{ github.event.pull_request.head.ref }}-${{ github.event.pull_request.head.sha }}
           restore-keys: |
-            turbo-${{ github.job }}-${{ github.ref_name }}-
+            turbo-${{ github.job }}-${{ github.event.pull_request.head.ref }}-
       - run: yarn
       - name: Cache playwright binaries
         uses: actions/cache@v2