diff --git a/sdk/tsconfig-base.json b/sdk/tsconfig-base.json
index a670969..e579500 100644
--- a/sdk/tsconfig-base.json
+++ b/sdk/tsconfig-base.json
@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "target": "es6",
-    "module": "ES6",
+    "module": "commonjs",
     "allowJs": false,
     "declaration": true,
     "lib": ["DOM", "ES6", "DOM.Iterable", "ScriptHost", "ES2016.Array.Include"],