diff --git a/pkgs/development/python-modules/ckcc-protocol/default.nix b/pkgs/development/python-modules/ckcc-protocol/default.nix
index a298a166f9c8..9b7cbb8df978 100644
--- a/pkgs/development/python-modules/ckcc-protocol/default.nix
+++ b/pkgs/development/python-modules/ckcc-protocol/default.nix
@@ -10,12 +10,12 @@
 
 buildPythonPackage rec {
   pname = "ckcc-protocol";
-  version = "1.3.2";
+  version = "1.4.0";
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-4y5pe0CFD3C1+N0kP/2j9Wser2zkn8Uf4203ci45Rq0=";
+    hash = "sha256-zZPU0+MwjqRYCqa+W0YTqCZv2WsMwa9R5xaN7ye77OU=";
   };
 
   propagatedBuildInputs = [ click ecdsa hidapi pyaes ];