diff --git a/.github/workflows/master.yml b/.github/workflows/master.yml
index 8967a02..797bd54 100644
--- a/.github/workflows/master.yml
+++ b/.github/workflows/master.yml
@@ -23,7 +23,9 @@ jobs:
         uses: EndBug/version-check@v1
         with:
           diff-search: true
-      - run: yarn run bundleBuild
-      - uses: actions/upload-artifact@v3
+      - if: steps.check.outputs.changed == 'true'
+        run: yarn run bundleBuild
+      - if: steps.check.outputs.changed == 'true'
+        uses: actions/upload-artifact@v3
         with:
           path: hirse.outline-list-*.zip