diff --git a/pkgs/development/python-modules/httpretty/default.nix b/pkgs/development/python-modules/httpretty/default.nix
index 3dd5b63bbf7..895a28356ee 100644
--- a/pkgs/development/python-modules/httpretty/default.nix
+++ b/pkgs/development/python-modules/httpretty/default.nix
@@ -12,6 +12,9 @@
 , nose-randomly
 , six
 , mock
+, eventlet
+, pytest
+, freezegun
 }:
 
 buildPythonPackage rec {
@@ -29,11 +32,15 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ six ];
 
-  checkInputs = [ nose sure coverage mock rednose
+  checkInputs = [ nose sure coverage mock rednose pytest
     # Following not declared in setup.py
-    nose-randomly requests tornado httplib2 nose-exclude
+    nose-randomly requests tornado httplib2 nose-exclude freezegun
   ];
 
+  checkPhase = ''
+    nosetests tests/unit # functional tests cause trouble requiring /etc/protocol
+  '';
+
   __darwinAllowLocalNetworking = true;
 
   # Those flaky tests are failing intermittently on all platforms