diff --git a/package.json b/package.json
index 2e55e0c..834e8c4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-in-viewport",
-  "version": "1.0.0-alpha.25",
+  "version": "1.0.0-alpha.26",
   "description": "Track React component in viewport using Intersection Observer API",
   "author": "Roderick Hsiao <roderickhsiao@gmail.com>",
   "license": "MIT",
diff --git a/tsconfig.json b/tsconfig.json
index ecd74b5..27bc70b 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -8,7 +8,7 @@
     "esModuleInterop": true,
     "isolatedModules": true,
     "jsx": "react-jsx",
-    "module": "ESNext",
+    "module": "commonjs",
     "moduleResolution": "node",
     "noEmit": false,
     "outDir": "dist/types",