diff --git a/pkgs/python-packages.nix b/pkgs/python-packages.nix
--- a/pkgs/python-packages.nix
+++ b/pkgs/python-packages.nix
@@ -193,14 +193,14 @@ self: super: {
     };
   };
   "gevent" = super.buildPythonPackage {
-    name = "gevent-1.4.0";
+    name = "gevent-1.5.0";
     doCheck = false;
     propagatedBuildInputs = [
       self."greenlet"
     ];
     src = fetchurl {
-      url = "https://files.pythonhosted.org/packages/ed/27/6c49b70808f569b66ec7fac2e78f076e9b204db9cf5768740cff3d5a07ae/gevent-1.4.0.tar.gz";
-      sha256 = "1lchr4akw2jkm5v4kz7bdm4wv3knkfhbfn9vkkz4s5yrkcxzmdqy";
+      url = "https://files.pythonhosted.org/packages/5a/79/2c63d385d017b5dd7d70983a463dfd25befae70c824fedb857df6e72eff2/gevent-1.5.0.tar.gz";
+      sha256 = "0aac3d4vhv5n4rsb6cqzq0d1xx9immqz4fmpddw35yxkwdc450dj";
     };
     meta = {
       license = [ pkgs.lib.licenses.mit ];
diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ zope.deprecation==4.4.0
 zope.interface==4.6.0
 
 ## http servers
-gevent==1.4.0
+gevent==1.5.0
 greenlet==0.4.15
 gunicorn==19.9.0
 waitress==1.3.1