diff --git a/workers/preview/src/index.ts b/workers/preview/src/index.ts
index 872cf1a99..14b2e7d1b 100644
--- a/workers/preview/src/index.ts
+++ b/workers/preview/src/index.ts
@@ -65,7 +65,7 @@ export class RailsContainer extends Container {
   pingEndpoint = "container/up";
   entrypoint = ["/rails/bin/preview-entrypoint", "bundle", "exec", "puma", "-C", "config/puma.rb"];
   envVars = {
-    RAILS_ENV: "production",
+    RAILS_ENV: "development",
     RAILS_LOG_TO_STDOUT: "true",
     RAILS_SERVE_STATIC_FILES: "true",
     SECRET_KEY_BASE: "preview-secret-key-base-for-pr-${PR_NUMBER}",