diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index f8d54936de3..e532bcc2a80 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -430,11 +430,11 @@ let pythonPackages = python.modules // rec {
   });
 
   foolscap = buildPythonPackage (rec {
-    name = "foolscap-0.5.1";
+    name = "foolscap-0.6.1";
 
     src = fetchurl {
       url = "http://foolscap.lothar.com/releases/${name}.tar.gz";
-      sha256 = "c7dfb6f9331e05a8d9553730493b4740c7bf4b4cd68ba834061f0ca0d455492d";
+      sha256 = "8b3e4fc678c5c41483b3130666583a1c3909713adcd325204daded7b67171ed5";
     };
 
     propagatedBuildInputs = [ twisted pkgs.pyopenssl ];