diff --git a/.swift-version b/.swift-version
new file mode 100644
index 0000000..bf77d54
--- /dev/null
+++ b/.swift-version
@@ -0,0 +1 @@
+4.2
diff --git a/Changelog.md b/Changelog.md
index d13d980..ca12b66 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -6,6 +6,10 @@ Current master
 
 - Nothing yet!
 
+4.4.1
+-----
+- Specify Swift 4.2 in podspec and .swift-version See [#59](https://github.com/RxSwiftCommunity/NSObject-Rx/pull/59) - [@fassko](https://github.com/fassko)
+
 4.4.0
 -----
 - Swift 4.2 and Xcode 10 support See [#58](https://github.com/RxSwiftCommunity/NSObject-Rx/pull/58) - [@fassko](https://github.com/fassko)
diff --git a/NSObject+Rx.podspec b/NSObject+Rx.podspec
index 6eb30a2..ec731c5 100644
--- a/NSObject+Rx.podspec
+++ b/NSObject+Rx.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "NSObject+Rx"
-  s.version      = "4.4.0"
+  s.version      = "4.4.1"
   s.summary      = "Handy RxSwift extensions on NSObject."
   s.description  = <<-DESC
     Right now, we just have a `rx_disposeBag` property, but we're open to PRs!
@@ -15,7 +15,7 @@ Pod::Spec.new do |s|
   s.watchos.deployment_target = '2.0'
   s.tvos.deployment_target = '9.0'
 
-  s.swift_version = '4.0'
+  s.swift_version = '4.2'
   s.source       = { :git => "https://github.com/RxSwiftCommunity/NSObject-Rx.git", :tag => s.version }
   s.source_files  = "*.swift"
   s.frameworks  = "Foundation"