diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6037ca01..0697184c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,7 @@ jobs:
         uses: actions/checkout@v4.2.2
         with:
           fetch-depth: 0
-          ref: ${{DEST_BRANCH}}
+          ref: "${DEST_BRANCH}"
           # sparse-checkout: |
           #   .github/workflows/
           #   src/_data/