diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index d70098186..5dc5c2ae3 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,3 +1,10 @@
+4.5.1 (2023*10*26)
+-------------------------------
+* Fix __eq__ protocol (#2197)
+* Fix formatting
+* Object equality fixes (#2200)
+* Add new OpenSearch instance names to constants.py (Fixes: #2198) (#2199)
+
 4.5.0 (2023*10*24)
 -------------------------------
 * Updates from spec version 136.0.0 (#2175)
diff --git a/docs/conf.py b/docs/conf.py
index 2669fc69a..ea306b0ff 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -26,7 +26,7 @@
 # The short X.Y version
 version = ""
 # The full version, including alpha/beta/rc tags
-release = "4.5.0"
+release = "4.5.1"
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/troposphere/__init__.py b/troposphere/__init__.py
index 7cb8e1d18..1f214e258 100644
--- a/troposphere/__init__.py
+++ b/troposphere/__init__.py
@@ -41,7 +41,7 @@
     else:
         from typing import Final
 
-__version__ = "4.5.0"
+__version__ = "4.5.1"
 
 # constants for DeletionPolicy and UpdateReplacePolicy
 Delete: Final = "Delete"