diff --git a/pkgs/development/python-modules/osc/default.nix b/pkgs/development/python-modules/osc/default.nix
index 25d2d9caa316..8a5812bcf28f 100644
--- a/pkgs/development/python-modules/osc/default.nix
+++ b/pkgs/development/python-modules/osc/default.nix
@@ -1,24 +1,23 @@
-{ stdenv, lib, buildPythonPackage, fetchFromGitHub, bashInteractive, urlgrabber
-, m2crypto, rpm, chardet
+{ stdenv, lib, buildPythonPackage, fetchFromGitHub, bashInteractive
+, rpm, urllib3, cryptography, diffstat
 }:
 
 buildPythonPackage rec {
   pname = "osc";
-  version = "0.170.0";
+  version = "1.0.0b1";
 
   src = fetchFromGitHub {
     owner = "openSUSE";
     repo = "osc";
     rev = version;
-    sha256 = "10dj9kscz59qm8rw5084gf0m8ail2rl7r8rg66ij92x88wvi9mbz";
+    sha256 = "cMltsR4Nxe0plHU5cP2Lj/qqlIqRbCXi6FXP8qx7908=";
   };
 
   buildInputs = [ bashInteractive ]; # needed for bash-completion helper
-  checkInputs = [ rpm ];
-  propagatedBuildInputs = [ urlgrabber m2crypto chardet ];
+  checkInputs = [ rpm diffstat ];
+  propagatedBuildInputs = [ urllib3 cryptography ];
 
   postInstall = ''
-    ln -s $out/bin/osc-wrapper.py $out/bin/osc
     install -D -m444 osc.fish $out/etc/fish/completions/osc.fish
     install -D -m555 dist/osc.complete $out/share/bash-completion/helpers/osc-helper
     mkdir -p $out/share/bash-completion/completions
@@ -30,6 +29,8 @@ buildPythonPackage rec {
     EOF
   '';
 
+  preCheck = "HOME=$TOP/tmp";
+
   meta = with lib; {
     broken = stdenv.isDarwin;
     homepage = "https://github.com/openSUSE/osc";