diff --git a/packages/server/src/api/controllers/static/index.ts b/packages/server/src/api/controllers/static/index.ts
index d2e887dcf8..984cb16c06 100644
--- a/packages/server/src/api/controllers/static/index.ts
+++ b/packages/server/src/api/controllers/static/index.ts
@@ -206,6 +206,7 @@ export const serveClientLibrary = async function (ctx: Ctx) {
       ObjectStoreBuckets.APPS,
       objectStore.clientLibraryPath(appId!)
     )
+    ctx.set("Content-Type", "application/javascript")
   } else if (env.isDev()) {
     // incase running from TS directly
     const tsPath = join(require.resolve("@budibase/client"), "..")