diff --git a/README.md b/README.md
index cefdbd4..74b2b7b 100644
--- a/README.md
+++ b/README.md
@@ -141,5 +141,5 @@ The Codable conformance means that TypedDate instances can be easily encoded to
 
 ## Installation
 ```Swift
-.package(url: "https://github.com/Ryu0118/swift-typed-date", exact: "0.3.0")
+.package(url: "https://github.com/Ryu0118/swift-typed-date", exact: "0.4.0")
 ```