diff --git a/pkgs/development/python-modules/cheroot/default.nix b/pkgs/development/python-modules/cheroot/default.nix
index da5870f7d500..3e80423c4255 100644
--- a/pkgs/development/python-modules/cheroot/default.nix
+++ b/pkgs/development/python-modules/cheroot/default.nix
@@ -20,13 +20,13 @@
 
 buildPythonPackage rec {
   pname = "cheroot";
-  version = "8.6.0";
+  version = "9.0.0";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-NmrfbnyslVVIbC0b5il5kwIu/2+MRlXBRDJozKPwjiU=";
+    hash = "sha256-PUetnuGey+wUS0dYOZA2aS/b9npAuW7vH7FFQ2ez0zg=";
   };
 
   nativeBuildInputs = [