diff --git a/pkgs/development/python-modules/preggy/default.nix b/pkgs/development/python-modules/preggy/default.nix
new file mode 100644
index 00000000000..b88366de88f
--- /dev/null
+++ b/pkgs/development/python-modules/preggy/default.nix
@@ -0,0 +1,25 @@
+{ stdenv, buildPythonPackage, fetchPypi, six, unidecode, nose, yanc }:
+
+buildPythonPackage rec {
+  pname = "preggy";
+  version = "1.4.2";
+
+  propagatedBuildInputs = [ six unidecode ];
+  checkInputs = [ nose yanc ];
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0g4ifjh01dkmdzs4621ahk8hpkngid1xxhl51jvzy4h4li4590hw";
+  };
+
+  checkPhase = ''
+    nosetests .
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Assertion library for Python";
+    homepage = http://heynemann.github.io/preggy/;
+    license = licenses.mit;
+    maintainers = with maintainers; [ jluttine ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 4a2d2c4c429..7def4851e7a 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4847,6 +4847,8 @@ in {
 
   packaging = callPackage ../development/python-modules/packaging { };
 
+  preggy = callPackage ../development/python-modules/preggy { };
+
   pytoml = callPackage ../development/python-modules/pytoml { };
 
   pypandoc = callPackage ../development/python-modules/pypandoc { };