diff --git a/pkgs/python-packages.nix b/pkgs/python-packages.nix
--- a/pkgs/python-packages.nix
+++ b/pkgs/python-packages.nix
@@ -159,13 +159,13 @@
     };
   };
   decorator = super.buildPythonPackage {
-    name = "decorator-4.0.10";
+    name = "decorator-4.0.11";
     buildInputs = with self; [];
     doCheck = false;
     propagatedBuildInputs = with self; [];
     src = fetchurl {
-      url = "https://pypi.python.org/packages/13/8a/4eed41e338e8dcc13ca41c94b142d4d20c0de684ee5065523fee406ce76f/decorator-4.0.10.tar.gz";
-      md5 = "434b57fdc3230c500716c5aff8896100";
+      url = "https://pypi.python.org/packages/cc/ac/5a16f1fc0506ff72fcc8fd4e858e3a1c231f224ab79bb7c4c9b2094cc570/decorator-4.0.11.tar.gz";
+      md5 = "73644c8f0bd4983d1b6a34b49adec0ae";
     };
     meta = {
       license = [ pkgs.lib.licenses.bsdOriginal { fullName = "new BSD License"; } ];
diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,6 +3,7 @@ setuptools==30.1.0
 
 Beaker==1.7.0
 configobj==5.0.6
+decorator==4.0.11
 dulwich==0.13.0
 hgsubversion==1.8.6
 infrae.cache==1.0.1