diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 16f33fd7..430bb5a4 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -29,6 +29,8 @@ jobs:
           yarn --immutable
 
       - name: Build
+        env:
+          NODE_ENV: production
         run: |
           yarn build
           touch out/.nojekyll