diff --git a/.swift-version b/.swift-version
deleted file mode 100644
index bf77d54..0000000
--- a/.swift-version
+++ /dev/null
@@ -1 +0,0 @@
-4.2
diff --git a/KYDrawerController.podspec b/KYDrawerController.podspec
index 06da5c4..ee61556 100644
--- a/KYDrawerController.podspec
+++ b/KYDrawerController.podspec
@@ -11,4 +11,5 @@ Pod::Spec.new do |s|
   s.source_files = "KYDrawerController/Classes/*.swift"
   s.requires_arc = true
   s.ios.deployment_target = '8.0'
+  s.swift_version = '4.2'
 end