diff --git a/pkgs/development/python-modules/bugsnag/default.nix b/pkgs/development/python-modules/bugsnag/default.nix
index adae7ff1c38..dde9c8c4c1e 100644
--- a/pkgs/development/python-modules/bugsnag/default.nix
+++ b/pkgs/development/python-modules/bugsnag/default.nix
@@ -7,11 +7,11 @@
 
 buildPythonPackage rec {
   pname = "bugsnag";
-  version = "3.7.1";
+  version = "4.0.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "32966bfe625ec6fc0dbc9d86d79a18f31b22b2fdec3ca070eeb3495304f7e18d";
+    sha256 = "01c2186f6c2a6f801b66d8fc73b8986bd2d4931a6ab40b720e5fd0b66757facc";
   };
 
   propagatedBuildInputs = [ six webob ];