diff --git a/README.md b/README.md
index c1b0716..955c0aa 100644
--- a/README.md
+++ b/README.md
@@ -2,4 +2,4 @@
 支付宝 sdk
 
 # Install
-pod 'AliPay', '~> 2.1.2'
+pod 'AliPay', '~> 2.1.2.1'