diff --git a/README.md b/README.md
index d7dd3c5..f596df4 100644
--- a/README.md
+++ b/README.md
@@ -117,6 +117,6 @@ Paul Zabelin, http://github.com/paulz
 
 PerspectiveTransform is available under the MIT license. See the LICENSE file for more info.
 
-[swift-badge]: https://img.shields.io/badge/Swift-4.2-orange.svg?style=flat
+[swift-badge]: https://img.shields.io/badge/Swift-5.0-orange.svg?style=flat
 [swift-url]: https://swift.org
 [carthage-badge]: https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat