diff --git a/pkgs/development/python-modules/cloup/default.nix b/pkgs/development/python-modules/cloup/default.nix
index c4b4de4832ab..aa1ce4c3603f 100644
--- a/pkgs/development/python-modules/cloup/default.nix
+++ b/pkgs/development/python-modules/cloup/default.nix
@@ -9,13 +9,13 @@
 
 buildPythonPackage rec {
   pname = "cloup";
-  version = "0.15.1";
+  version = "1.0.0";
 
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-gAi0gKd9ihEseHAvZGda299Z+tw545HzuovKycTUzYY=";
+    sha256 = "sha256-/DR3evRK1d7Kz9dCp4RzeAD5opsYPZF0ox0HqR9u710=";
   };
 
   nativeBuildInputs = [