diff --git a/README.md b/README.md
index 71f561e..a98278e 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ The [OmiseGO](https://omisego.network) iOS SDK allows developers to easily inter
 
 - iOS 10.0+
 - Xcode 9+
-- Swift 4.0
+- Swift 4.1
 
 ---