diff --git a/pkgs/development/libraries/libev/src-for-default.nix b/pkgs/development/libraries/libev/src-for-default.nix
index c7b37ce1891..52c8e65bc4f 100644
--- a/pkgs/development/libraries/libev/src-for-default.nix
+++ b/pkgs/development/libraries/libev/src-for-default.nix
@@ -1,8 +1,8 @@
 rec {
-  advertisedUrl="http://dist.schmorp.de/libev/Attic/libev-3.8.tar.gz";
-  version = "3.8";
-  url="http://dist.schmorp.de/libev/Attic/libev-3.8.tar.gz";
-  hash = "1512n6c5q9ykqmk5zbwyb1na9qb9shd900kf4xhl5g07aypm7qr5";
-  name = "libev-3.8";
+  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";
   
 }