diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 8ec275834e8..a98bc5e93af 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3906,6 +3906,26 @@ in modules // {
     };
   };
 
+  pycontracts = buildPythonPackage rec {
+    version = "1.7.9";
+    name = "PyContracts-${version}";
+
+    src = pkgs.fetchurl {
+      url = "https://pypi.python.org/packages/source/P/PyContracts/${name}.tar.gz";
+      sha256 = "0rdc9pz08885vqkazjc3lyrrghmf3jzxnlsgpn8akl808x1qrfqf";
+    };
+
+    buildInputs = with self; [ nose ];
+
+    propagatedBuildInputs = with self; [ pyparsing decorator six ];
+
+    meta = {
+      description = "Allows to declare constraints on function parameters and return values.";
+      homepage = https://pypi.python.org/pypi/PyContracts;
+      license = licenses.lgpl2;
+    };
+  };
+
   pycparser = buildPythonPackage rec {
     name = "pycparser-${version}";
     version = "2.14";