diff --git a/packages/string-templates/package.json b/packages/string-templates/package.json
index e4dff0e895..03b3cf2001 100644
--- a/packages/string-templates/package.json
+++ b/packages/string-templates/package.json
@@ -15,7 +15,8 @@
   },
   "files": [
     "dist",
-    "src"
+    "src",
+    "manifest.json"
   ],
   "scripts": {
     "build": "tsc && rollup -c",