diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 43c162346ef7..23aa2f2c51be 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -683,11 +683,11 @@ rec {
   };
 
   setuptoolsTrial = buildPythonPackage {
-    name = "setuptools-trial-0.5.3";
+    name = "setuptools-trial-0.5.9";
 
     src = fetchurl {
-      url = "http://pypi.python.org/packages/source/s/setuptools_trial/setuptools_trial-0.5.3.tar.gz";
-      sha256 = "0h3mgjsz3z1sjl9j0b6bv4bss8d0przamj4gnjmpyazc633hhlyi";
+      url = "http://pypi.python.org/packages/source/s/setuptools_trial/setuptools_trial-0.5.9.tar.gz";
+      sha256 = "4e3b5a183b9cf6ff637777c9852dfe8eaab156289e7a578525d68b1cfb3c9f29";
     };
 
     propagatedBuildInputs = [ twisted ];