diff --git a/Caddyfile b/Caddyfile
index 51b6994..fd7261c 100644
--- a/Caddyfile
+++ b/Caddyfile
@@ -14,9 +14,13 @@
 	}
 
 	# Runtime config: Caddy renders {{env "API_BASE"}} into env.js. Never cache it.
+	# `templates` only acts on text/html + text/plain by default, so JS responses
+	# are skipped unless their MIME type is named explicitly here.
 	handle /env.js {
-		templates
 		header Cache-Control "no-store"
+		templates {
+			mime text/javascript application/javascript
+		}
 		file_server
 	}