diff --git a/pkgs/development/python-modules/pipdeptree/default.nix b/pkgs/development/python-modules/pipdeptree/default.nix
index 3aa70970fc65..9b0177ce10ec 100644
--- a/pkgs/development/python-modules/pipdeptree/default.nix
+++ b/pkgs/development/python-modules/pipdeptree/default.nix
@@ -16,7 +16,7 @@
 
 buildPythonPackage rec {
   pname = "pipdeptree";
-  version = "2.20.0";
+  version = "2.21.0";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
@@ -25,7 +25,7 @@ buildPythonPackage rec {
     owner = "tox-dev";
     repo = "pipdeptree";
     rev = "refs/tags/${version}";
-    hash = "sha256-Mng5YUM2+T3OFrr4uGVvq5mP0aq10r21pp46tw6lLno=";
+    hash = "sha256-cs04HGmKG1I42AYH1BOfm9tnbSQuCAxo5KOdJ4/ysos=";
   };
 
   build-system = [