diff --git a/pkgs/development/python-modules/django_silk/default.nix b/pkgs/development/python-modules/django_silk/default.nix
index e8c44efdc40..6bb2b1d43f1 100644
--- a/pkgs/development/python-modules/django_silk/default.nix
+++ b/pkgs/development/python-modules/django_silk/default.nix
@@ -1,6 +1,7 @@
 { stdenv
 , buildPythonPackage
-, fetchPypi
+, python
+, fetchFromGitHub
 , django
 , pygments
 , simplejson
@@ -12,26 +13,50 @@
 , pytz
 , pillow
 , mock
+, gprof2dot
+, freezegun
+, contextlib2
+, networkx
+, pydot
+, factory_boy
 }:
 
 buildPythonPackage rec {
   pname = "django-silk";
   version = "3.0.2";
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "8dd5b78531360bd8c3d571384f9f4f82ef03e1764e30dd4621c5638f5c973a1d";
+  # pypi tarball doesn't include test project
+  src = fetchFromGitHub {
+    owner = "jazzband";
+    repo = "django-silk";
+    rev = version;
+    sha256 = "1fbaafc2gx01gscdalp6hj6bz4b0cmq59lgmvsydw7jkds4mps7c";
   };
-
-  doCheck = false;
+  # "test_time_taken" tests aren't suitable for reproducible execution, but django's
+  # test runner doesn't have an easy way to ignore tests - so instead prevent it from picking
+  # them up as tests
+  postPatch = ''
+    substituteInPlace project/tests/test_silky_profiler.py \
+      --replace "def test_time_taken" "def _test_time_taken"
+  '';
 
   buildInputs = [ mock ];
-  propagatedBuildInputs = [ django pygments simplejson dateutil requests sqlparse jinja2 autopep8 pytz pillow ];
+  propagatedBuildInputs = [
+    django pygments simplejson dateutil requests
+    sqlparse jinja2 autopep8 pytz pillow gprof2dot
+  ];
+
+  checkInputs = [ freezegun contextlib2 networkx pydot factory_boy ];
+  checkPhase = ''
+    cd project
+    DB=sqlite3 DB_NAME=db.sqlite3 ${python.interpreter} manage.py test
+  '';
 
   meta = with stdenv.lib; {
     description = "Silky smooth profiling for the Django Framework";
     homepage = https://github.com/mtford90/silk;
     license = licenses.mit;
+    maintainers = with maintainers; [ ris ];
   };
 
 }
diff --git a/pkgs/development/python-modules/gprof2dot/default.nix b/pkgs/development/python-modules/gprof2dot/default.nix
index ed48842496c..48abf5058df 100644
--- a/pkgs/development/python-modules/gprof2dot/default.nix
+++ b/pkgs/development/python-modules/gprof2dot/default.nix
@@ -1,4 +1,4 @@
-{ lib, fetchFromGitHub, buildPythonApplication }:
+{ lib, fetchFromGitHub, buildPythonApplication, python, graphviz }:
 
 buildPythonApplication {
   name = "gprof2dot-2017-09-19";
@@ -10,11 +10,13 @@ buildPythonApplication {
     sha256 = "1b5wvjv5ykbhz7aix7l3y7mg1hxi0vgak4a49gr92sdlz8blj51v";
   };
 
+  checkInputs = [ graphviz ];
+  checkPhase = "${python.interpreter} tests/test.py";
+
   meta = with lib; {
     homepage = https://github.com/jrfonseca/gprof2dot;
     description = "Python script to convert the output from many profilers into a dot graph";
     license = licenses.lgpl3Plus;
-    platforms = platforms.linux;
     maintainers = [ maintainers.pmiddend ];
   };
 }
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index e2df4dda96e..b4446ffa415 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -454,7 +454,9 @@ in {
 
   grandalf = callPackage ../development/python-modules/grandalf { };
 
-  gprof2dot = callPackage ../development/python-modules/gprof2dot { };
+  gprof2dot = callPackage ../development/python-modules/gprof2dot {
+    inherit (pkgs) graphviz;
+  };
 
   gsd = callPackage ../development/python-modules/gsd { };