diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 972729c..ce49e89 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -37,7 +37,7 @@ jobs:
 
       - name: Tag and Push Image
         run: |
-          export IMAGE_NAME=$(echo "$IMAGE_NAME" | tr '[:lower:]')
+          export IMAGE_NAME=$(echo "$IMAGE_NAME" | awk 'print tolower($0)')
           echo $IMAGE_NAME
           env
           echo ${{ env.REGISTRY }}/$IMAGE_NAME:master