diff --git a/README.md b/README.md
index 4930a96c..30b6a729 100644
--- a/README.md
+++ b/README.md
@@ -2,10 +2,16 @@
 
 ```json
 {
-    "com.google.play.games": "https://github.com/Thaina/play-games-plugin-for-unity.git?path=/Assets/Public/GooglePlayGames/com.google.play.games"
+  "dependencies": {
+    "com.google.external-dependency-manager": "https://github.com/googlesamples/unity-jar-resolver.git?path=upm",
+    "com.google.play.games": "https://github.com/Thaina/play-games-plugin-for-unity.git?path=/Assets/Public/GooglePlayGames/com.google.play.games",
+    ...
+  }
 }
 ```
 
+`external-dependency-manager` is required dependencies to imported with UPM. But can be tgz or OpenUPM
+
 This fork now use gradle post build event to patch androidmanifest
 
 Also fix the image loader from play service