diff --git a/pkgs/development/python-modules/waitress/default.nix b/pkgs/development/python-modules/waitress/default.nix
index 2c1536a7d8a..a377abc160e 100644
--- a/pkgs/development/python-modules/waitress/default.nix
+++ b/pkgs/development/python-modules/waitress/default.nix
@@ -5,11 +5,11 @@
 
 buildPythonPackage rec {
   pname = "waitress";
-  version = "1.0.2";
+  version = "1.1.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0pw6yyxi348r2xpq3ykqnf7gwi881azv2422d2ixb0xi5jws2ky7";
+    sha256 = "d33cd3d62426c0f1b3cd84ee3d65779c7003aae3fc060dee60524d10a57f05a9";
   };
 
   doCheck = false;