diff --git a/pkgs/development/python-modules/can/default.nix b/pkgs/development/python-modules/can/default.nix
index 0d449743b2f..4051dc88e0c 100644
--- a/pkgs/development/python-modules/can/default.nix
+++ b/pkgs/development/python-modules/can/default.nix
@@ -19,7 +19,7 @@
 
 buildPythonPackage rec {
   pname = "can";
-  version = "4.2.0";
+  version = "4.2.1";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
@@ -28,7 +28,7 @@ buildPythonPackage rec {
     owner = "hardbyte";
     repo = "python-can";
     rev = "refs/tags/v${version}";
-    hash = "sha256-KY+WViWcKbrO6SO6cIo5dWylyBDEdmAR6wYwJogeCjs=";
+    hash = "sha256-3luuff/yAAERaptMsKCYISwWrzqDJClm+dnoJpjBkVY=";
   };
 
   postPatch = ''