diff --git a/.github/workflows/build-images.yaml b/.github/workflows/build-images.yaml
index 88ca1aee..f85691d9 100644
--- a/.github/workflows/build-images.yaml
+++ b/.github/workflows/build-images.yaml
@@ -109,8 +109,8 @@ jobs:
       - name: Set Operator version
         id: operator-version
         run: |
-          tag=${{GITHUB_REF_NAME}}
-          if [[ ${tag} =~ ^v[0-9]+\.[0-9]+\.[0-9]+(-.+)?$ ]]; then
+          tag=${GITHUB_REF_NAME/\//-}
+          if [[ ${tag} =~ ^[0-9]+\.[0-9]+\.[0-9]+(-.+)?$ ]]; then
           echo "VERSION=${tag#v}" >> $GITHUB_ENV
           else
           echo "VERSION=${{ github.sha }}" >> $GITHUB_ENV