diff --git a/pkgs/development/python-modules/actdiag/default.nix b/pkgs/development/python-modules/actdiag/default.nix
index 00a08b3e7a82..84aef2dfb03d 100644
--- a/pkgs/development/python-modules/actdiag/default.nix
+++ b/pkgs/development/python-modules/actdiag/default.nix
@@ -1,32 +1,24 @@
-{ stdenv, buildPythonPackage, fetchPypi, fetchpatch
-, pep8, nose, unittest2, docutils, blockdiag, reportlab }:
+{ stdenv, buildPythonPackage, fetchPypi
+, nose, docutils, blockdiag, reportlab }:
 
 buildPythonPackage rec {
   pname = "actdiag";
-  version = "0.5.4";
+  version = "2.0.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "983071777d9941093aaef3be1f67c198a8ac8d2bba264cdd1f337ca415ab46af";
+    sha256 = "0g51v9dmdq18z33v332f1f0cmb3hqgaga5minj0mc2sglark1s7h";
   };
 
-  patches = fetchpatch {
-    name = "drop_test_pep8.py.patch";
-    url = "https://bitbucket.org/blockdiag/actdiag/commits/c1f2ed5947a1e93291f5860e4e30cee098bd635d/raw";
-    sha256 = "1zxzwb0fvwlc8xgs45fx65341sjhb3h6l2p6rdj6i127vg1hsxb4";
-  };
+  propagatedBuildInputs = [ blockdiag docutils ];
 
-  buildInputs = [ pep8 nose unittest2 docutils ];
-
-  propagatedBuildInputs = [ blockdiag ];
-
-  checkInputs = [ reportlab ];
+  checkInputs = [ nose reportlab ];
 
   meta = with stdenv.lib; {
     description = "Generate activity-diagram image from spec-text file (similar to Graphviz)";
     homepage = "http://blockdiag.com/";
     license = licenses.asl20;
     platforms = platforms.unix;
-    maintainers = with maintainers; [ bjornfor ];
+    maintainers = with maintainers; [ bjornfor SuperSandro2000 ];
   };
 }