diff --git a/.github/workflows/deploy_web_nightly.yml b/.github/workflows/deploy_web_nightly.yml
index 40ce232f11..a4ecb080fe 100644
--- a/.github/workflows/deploy_web_nightly.yml
+++ b/.github/workflows/deploy_web_nightly.yml
@@ -3,6 +3,7 @@ on:
   workflow_dispatch:
 env:
   REEARTH_URL: visualizer.test.reearth.dev
+  GCP_REGION: us-central1
   GCS_DEST: gs://reearth-visualizer-oss-static-bucket/
 
   IMAGE: reearth/reearth-visualizer-web:nightly