diff --git a/CHANGELOG.md b/CHANGELOG.md
index 69b42639..4fd0ce3a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 6.4.0
+
+- CSP: Add support for trusted-types, require-trusted-types-for directive (@JackMc): https://github.com/github/secure_headers/pull/486
+
 ## 6.3.4
 
 - CSP: Do not deduplicate alternate schema source expressions (@keithamus): https://github.com/github/secure_headers/pull/478
diff --git a/lib/secure_headers/version.rb b/lib/secure_headers/version.rb
index 22169825..2614e5fe 100644
--- a/lib/secure_headers/version.rb
+++ b/lib/secure_headers/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module SecureHeaders
-  VERSION = "6.3.4"
+  VERSION = "6.4.0"
 end