diff --git a/pkgs/development/python-modules/cornice/default.nix b/pkgs/development/python-modules/cornice/default.nix
index 4ac38986245d..598c3bd1c089 100644
--- a/pkgs/development/python-modules/cornice/default.nix
+++ b/pkgs/development/python-modules/cornice/default.nix
@@ -9,11 +9,11 @@
 
 buildPythonPackage rec {
   pname = "cornice";
-  version = "3.6.1";
+  version = "4.0.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "d3d608b9ff405e7ba5e9629ef0c09b7605997e1aea0dafb2aaa66761ff7cab08";
+    sha256 = "d083832e9db65da4784436deabd7d37959de88c3b8ba51d539fa1e1f8313439d";
   };
 
   propagatedBuildInputs = [ pyramid simplejson six venusian ];