diff --git a/pkgs/development/libraries/libev/src-for-default.nix b/pkgs/development/libraries/libev/src-for-default.nix
index 52c8e65bc4f..49624fc6bd2 100644
--- a/pkgs/development/libraries/libev/src-for-default.nix
+++ b/pkgs/development/libraries/libev/src-for-default.nix
@@ -1,8 +1,9 @@
 rec {
-  advertisedUrl="http://dist.schmorp.de/libev/Attic/libev-4.04.tar.gz";
-  version = "4.04";
-  url="http://dist.schmorp.de/libev/Attic/libev-4.04.tar.gz";
-  hash = "ab3a09e967e3b868055cd9363fd236aa093f8643d19cc7042e90e0dfe905b012";
-  name = "libev-4.04";
+   version="4.11";
+   name="libev-4.11";
+   hash="1pwcjch21xc7cfmjldkw1n7lcs4pyqm9dx573wdhmmp4yrpz2mcz";
+   url="http://dist.schmorp.de/libev/Attic/libev-${version}.tar.gz";
+   advertisedUrl="http://dist.schmorp.de/libev/Attic/libev-4.11.tar.gz";
+  
   
 }