diff --git a/CHANGELOG.md b/CHANGELOG.md
index a33e600..6925119 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## [6.4.1]
+Released 17th September 2025
+### Fixed
+ - Use u64 in Raders twiddle calculations (Thanks to @HEnquist) (#164, fixes #163)
+
 ## [6.4]
 Released 12th June 2025
 ### Added
diff --git a/Cargo.toml b/Cargo.toml
index b2f882c..f9cb1cb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 
 name = "rustfft"
-version = "6.4.0"
+version = "6.4.1"
 authors = ["Allen Welkie <allen.welkie at gmail>", "Elliott Mahler <join.together at gmail>"]
 edition = "2021"
 rust-version = "1.61"