diff --git a/pkgs/development/python-modules/mkdocs-mermaid2-plugin/default.nix b/pkgs/development/python-modules/mkdocs-mermaid2-plugin/default.nix
index b35b48626644..c97cd755c8e6 100644
--- a/pkgs/development/python-modules/mkdocs-mermaid2-plugin/default.nix
+++ b/pkgs/development/python-modules/mkdocs-mermaid2-plugin/default.nix
@@ -14,7 +14,7 @@
 
 buildPythonPackage rec {
   pname = "mkdocs-mermaid2-plugin";
-  version = "1.2.2";
+  version = "1.2.3";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
@@ -23,7 +23,7 @@ buildPythonPackage rec {
     owner = "fralau";
     repo = "mkdocs-mermaid2-plugin";
     tag = "v${version}";
-    hash = "sha256-4WuE9fO4o0uN48W2Rwd4gKa6pK9bqyrcGjFLEkfJ0E4=";
+    hash = "sha256-EsfcOnfjZpAndYccN8WTpfLoUAlc5JQkgoy1ro1hMRo=";
   };
 
   propagatedBuildInputs = [