diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8b1729f0..611c4b51 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,12 +3,14 @@
 This project uses [Semantic Versioning 2.0.0](https://semver.org/).
 
 
-## main
+## 5.0.0
 
 ### Changed
 
 - Minimum Ruby version is 2.6
 
+- Updated definitions.
+
 
 ## 4.0.7
 
diff --git a/lib/public_suffix/version.rb b/lib/public_suffix/version.rb
index 80d373f7..1ab5e3fa 100644
--- a/lib/public_suffix/version.rb
+++ b/lib/public_suffix/version.rb
@@ -10,6 +10,6 @@
 module PublicSuffix
 
   # @return [String] The current library version.
-  VERSION = "4.0.7"
+  VERSION = "5.0.0"
 
 end