diff --git a/pkgs/development/python-modules/ismartgate/default.nix b/pkgs/development/python-modules/ismartgate/default.nix
index 594764bae0f9..ca777f4b2832 100644
--- a/pkgs/development/python-modules/ismartgate/default.nix
+++ b/pkgs/development/python-modules/ismartgate/default.nix
@@ -17,14 +17,14 @@
 
 buildPythonPackage rec {
   pname = "ismartgate";
-  version = "4.0.1";
+  version = "4.0.3";
   disabled = pythonOlder "3.7";
 
   src = fetchFromGitHub {
     owner = "bdraco";
     repo = pname;
     rev = "v${version}";
-    sha256 = "1kxlcjnppsk8m93gfcpy3asig1frhp1k5rfqx3rszhkcxmni95m2";
+    sha256 = "sha256-s9fHvjqPHDKuT/DMGu1ETuPNlFIkp0wlv15KeTb6fX8=";
   };
 
   propagatedBuildInputs = [