diff --git a/pkgs/development/python-modules/casbin/default.nix b/pkgs/development/python-modules/casbin/default.nix
index f5bb83c7734f..ce89d52dc905 100644
--- a/pkgs/development/python-modules/casbin/default.nix
+++ b/pkgs/development/python-modules/casbin/default.nix
@@ -9,7 +9,7 @@
 
 buildPythonPackage rec {
   pname = "casbin";
-  version = "1.19.0";
+  version = "1.20.0";
   format = "setuptools";
 
   disabled = pythonOlder "3.6";
@@ -18,7 +18,7 @@ buildPythonPackage rec {
     owner = pname;
     repo = "pycasbin";
     rev = "refs/tags/v${version}";
-    hash = "sha256-lIVZhWtGWJutmHgReT4k4G5hJZuD52AaJhwmwTmqHIY=";
+    hash = "sha256-hvnOVyXaC74pMlERZQQlrk5keyWAvE/UONwErJ7RA5c=";
   };
 
   propagatedBuildInputs = [