diff --git a/pkgs/applications/networking/zerobin/default.nix b/pkgs/applications/networking/zerobin/default.nix
index b86fe7cc6410..16a52d670450 100644
--- a/pkgs/applications/networking/zerobin/default.nix
+++ b/pkgs/applications/networking/zerobin/default.nix
@@ -7,6 +7,7 @@
 python3Packages.buildPythonApplication rec {
   pname = "zerobin";
   version = "1.0.5";
+
   src = fetchFromGitHub {
     owner = "Tygs";
     repo = "0bin";
@@ -21,6 +22,7 @@ python3Packages.buildPythonApplication rec {
     python3Packages.pyscss
     nodePackages.uglify-js
   ];
+
   propagatedBuildInputs = with python3Packages; [
     appdirs
     beaker
@@ -30,16 +32,19 @@ python3Packages.buildPythonApplication rec {
     lockfile
     paste
   ];
+
   prePatch = ''
     # replace /bin/bash in compress.sh
     patchShebangs .
 
     # relax version constraints of some dependencies
     substituteInPlace setup.cfg \
+      --replace "clize==4.1.1" "clize" \
       --replace "bleach==3.1.5" "bleach>=3.1.5,<4" \
       --replace "bottle==0.12.18" "bottle>=0.12.18,<1" \
       --replace "Paste==3.4.3" "Paste>=3.4.3,<4"
   '';
+
   buildPhase = ''
     runHook preBuild
     doit build
@@ -51,6 +56,8 @@ python3Packages.buildPythonApplication rec {
   # See https://github.com/NixOS/nixpkgs/pull/98734#discussion_r495823510
   doCheck = false;
 
+  pythonImportsCheck = [ "zerobin" ];
+
   meta = with lib; {
     description = "A client side encrypted pastebin";
     homepage = "https://0bin.net/";
diff --git a/pkgs/development/python-modules/clize/default.nix b/pkgs/development/python-modules/clize/default.nix
index 0088acdb832c..faeb54f794bb 100644
--- a/pkgs/development/python-modules/clize/default.nix
+++ b/pkgs/development/python-modules/clize/default.nix
@@ -15,18 +15,13 @@
 
 buildPythonPackage rec {
   pname = "clize";
-  version = "4.1.1";
+  version = "4.2.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "f54dedcf6fea90a3e75c30cb65e0ab1e832760121f393b8d68edd711dbaf7187";
+    sha256 = "06p47i6hri006v7xbx7myj02as1a6f34rv88wfa9rb067p13nmyz";
   };
 
-  # Remove overly restrictive version constraints
-  postPatch = ''
-    substituteInPlace setup.py --replace "attrs>=19.1.0,<20" "attrs"
-  '';
-
   checkInputs = [
     pytestCheckHook
     python-dateutil
@@ -49,5 +44,6 @@ buildPythonPackage rec {
     description = "Command-line argument parsing for Python";
     homepage = "https://github.com/epsy/clize";
     license = licenses.mit;
+    maintainers = with maintainers; [ ];
   };
 }