diff --git a/Installation.md b/Installation.md
index 6ea60bf..efa8716 100644
--- a/Installation.md
+++ b/Installation.md
@@ -7,6 +7,7 @@ go get github.com/hajimehoshi/ebiten/...
 If you want to run your game on a web browser, execute this:
 
 ```sh
+go get github.com/gopherjs/gopherjs
 go get github.com/gopherjs/gopherwasm/js
 ```