diff --git a/types/fm-websync/tsconfig.json b/types/fm-websync/tsconfig.json
index 7d22ec59f0..1ec64935da 100644
--- a/types/fm-websync/tsconfig.json
+++ b/types/fm-websync/tsconfig.json
@@ -8,6 +8,9 @@
         "typeRoots": [
             "../"
         ],
+        "lib": [
+            "es6", "dom"
+        ],
         "types": [],
         "noEmit": true,
         "forceConsistentCasingInFileNames": true