diff --git a/Cartfile b/Cartfile
index e89ec59..1f7ac63 100644
--- a/Cartfile
+++ b/Cartfile
@@ -28,7 +28,7 @@
 # github "RxSwiftCommunity/RxCoreLocation" "1.3.1" # --platform iOS,tvOS,macOS
 # github "RxSwiftCommunity/RxGesture" "2.1.0"
 
-# github "sauravexodus/RxKeyboard" "carthage-support"
+# github "sauravexodus/RxKeyboard" "carthage-support" # --platform iOS
 # github "RxSwiftCommunity/RxKingfisher" "0.3.1"
 # github "RxSwiftCommunity/RxOptional" "3.6.2" # --platform iOS,tvOS,macOS
 # github "RxSwiftCommunity/RxReachability" "0.1.8"