diff --git a/README.md b/README.md
index 639d3b0..12104fa 100644
--- a/README.md
+++ b/README.md
@@ -10,4 +10,4 @@
 1. `git clone [repo] && cd AndroidLibXrayLite`
 2. `gomobile init`
 3. `go mod tidy -v`
-4. `gomobile bind -v -androidapi 19 -ldflags='-s -w' ./`
+4. `gomobile bind -v -androidapi 21 -ldflags='-s -w' ./`