diff --git a/CHANGELOG.md b/CHANGELOG.md
index b5138acf..6e258bd4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v1.6.5
+* (#241) Drop Python 3.9 support in favor of 3.12 and
+fix issue with plot_topology on Python 3.11.10
+
 ## v1.6.4
 * (#240) fix Pint Quantity import error by using more recent version.
 
diff --git a/setup.py b/setup.py
index ff7219df..ccf17489 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 from setuptools import setup
 
 
-VERSION = '1.6.4'
+VERSION = '1.6.5'
 
 
 if __name__ == '__main__':