diff --git a/CHANGELOG.md b/CHANGELOG.md
index 49c2183af..7ab66ae44 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+## v1.45.1 (Released 2024-12-19)
+
+IMPROVEMENTS
+
+- fix: update change codes to comly with 2024 nacha operating rules
+
+BUILD
+
+- fix(deps): update module golang.org/x/net to v0.33.0 (#1528)
+
 ## v1.45.0 (Released 2024-12-17)
 
 IMPROVEMENTS
diff --git a/version.go b/version.go
index 8c8f50c6f..6f3a22c24 100644
--- a/version.go
+++ b/version.go
@@ -18,4 +18,4 @@
 package ach
 
 // Version Number
-const Version = "v1.45.0"
+const Version = "v1.45.1"