diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index 0893cb2..cd41762 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -52,5 +52,5 @@ jobs:
         uses: docker/build-push-action@v6
         with:
           context: .
-          push: {{ github.ref_type == 'tag' }}
+          push: ${{ github.ref_type == 'tag' }}
           tags: ghcr.io/fhcrc/taxtastic:test