diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 8a49d7e..46d2d2b 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -53,8 +53,8 @@ jobs:
       run: npm ci --include=dev
     - name: Build site
       run: npx next build
-    # TODO(mrzzy): gate deploy with tag
     - name: Upload site to b2
+      if: ${{ github.ref_type == "tag" }}
       env:
         B2_APPLICATION_KEY_ID: "${{ secrets.B2_APPLICATION_KEY_ID }}"
         B2_APPLICATION_KEY: "${{ secrets.B2_APPLICATION_KEY }}"