diff --git a/WebAssembly.md b/WebAssembly.md
index 171b066..7f4d26a 100644
--- a/WebAssembly.md
+++ b/WebAssembly.md
@@ -3,7 +3,7 @@ The easiest way is to use [WasmServe](https://github.com/hajimehoshi/wasmserve)
 # Requirements
 
 * Go 1.11
-* Ebiten 2.0.0-alpha / master branch
+* Ebiten master branch (1.8.0-alpha.0.XXX) / 2.0.0-alpha
 
 # Compile your game