diff --git a/.github/workflows/cdkactions_build-and-publish.yaml b/.github/workflows/cdkactions_build-and-publish.yaml
index dfc9855..3313859 100644
--- a/.github/workflows/cdkactions_build-and-publish.yaml
+++ b/.github/workflows/cdkactions_build-and-publish.yaml
@@ -35,12 +35,14 @@ jobs:
     if: startsWith(github.ref, 'refs/tags')
     steps:
       - uses: actions/checkout@v2
+      - name: Install dependencies
+        run: pip install poetry
       - name: Verify tag
         run: |-
           GIT_TAG=${GITHUB_REF}
           LIBRARY_VERSION=$(poetry version -s)
-          echo $GIT_TAG
-          if [[ "$GIT_TAG" != LIBRARY_VERSION ]]; then exit 1; fi
+          POETRY_REF=refs/tags/$LIBRARY_VERSION
+          if [[ ${GITHUB_REF} != POETRY_REF ]]; then exit 1; fi
       - name: Build
         run: poetry build
       - name: Publish