diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b3d2848c6..b12dc0a01 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,11 +9,15 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+      - name: Extract branch name
+        shell: bash
+        run: echo "##[set-output name=branch;]$(echo ${GITHUB_REF#refs/heads/})"
+        id: extract_branch
       - name: Docker meta
         id: meta
         uses: crazy-max/ghaction-docker-meta@v2
         with:
-          images: gcr.io/up9-docker-hub/mizu/${{ github.ref }}
+          images: gcr.io/up9-docker-hub/mizu/${{ steps.extract_branch.outputs.branch }}
           tags: |
             type=sha
             type=raw,${{ github.sha }}