diff --git a/HTTPStatusCodes.podspec b/HTTPStatusCodes.podspec
index 91ef8e3..6fd476a 100644
--- a/HTTPStatusCodes.podspec
+++ b/HTTPStatusCodes.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name = 'HTTPStatusCodes'
-  s.version = '3.3.0'
+  s.version = '3.3.1'
   s.license = 'MIT'
   s.summary = 'Swift enum wrapper for easier handling of HTTP status codes'
   s.homepage = 'https://github.com/rhodgkins/SwiftHTTPStatusCodes'
diff --git a/README.md b/README.md
index 43d5f1e..45e6e31 100644
--- a/README.md
+++ b/README.md
@@ -16,13 +16,18 @@ If this library is out of date compared to this page please open an issue and I
 
 ## Usage
 
-Swift 3.0 support is added in version 3.1 of this framework. For use with older versions of Swift use version 3.0.
+### Swift versions support
+
+* Swift 5 - use version 3.3.1
+* Swift 4 - use version 3.3.0
+* Swift 3 - use version 3.1
+* Older versions - use version 3.0
 
 ### Carthage
 
 `Cartfile`:
 ```ogdl
-github "rhodgkins/SwiftHTTPStatusCodes" ~> 3.2
+github "rhodgkins/SwiftHTTPStatusCodes" ~> 3.3
 ```
 Source code:
 ```swift
@@ -32,7 +37,7 @@ import HTTPStatusCodes
 ### CocoaPods
 `Podfile`:
 ```ruby
-pod 'HTTPStatusCodes', '~> 3.2.0'
+pod 'HTTPStatusCodes', '~> 3.3.0'
 ```
 Source code:
 
diff --git a/Tests/HTTPStatusCodes.xcconfig b/Tests/HTTPStatusCodes.xcconfig
index 2367e04..8b793b5 100644
--- a/Tests/HTTPStatusCodes.xcconfig
+++ b/Tests/HTTPStatusCodes.xcconfig
@@ -10,7 +10,7 @@
 
 PRODUCT_NAME                            = HTTPStatusCodes
 PRODUCT_BUNDLE_IDENTIFIER               = uk.co.rhodgkins.swift.$(PRODUCT_NAME:rfc1034identifier)
-HSC_VERSION                             = 3.3.0
+HSC_VERSION                             = 3.3.1
 
 // Universal Framework
 APPLICATION_EXTENSION_API_ONLY          = YES