diff --git a/pkgs/shells/zsh/4.3.5.nix b/pkgs/shells/zsh/4.3.5.nix
index 227da7995fb..c626db49107 100644
--- a/pkgs/shells/zsh/4.3.5.nix
+++ b/pkgs/shells/zsh/4.3.5.nix
@@ -1,6 +1,6 @@
 args: with args;
 let documentation = fetchurl {
-    url = http://www.math.technion.ac.il/pub/zsh/zsh-4.3.5-doc.tar.bz2;
+    url = mirror://sourceforge/zsh/zsh-4.3.5-doc.tar.bz2;
     sha256 = "0jf35xibp8wfka7rdk9q8spkwprlhjx1sp7vp6img8wks12cvlkx";
   };
 in
@@ -8,7 +8,7 @@ stdenv.mkDerivation {
   name = "zsh-${version}";
 
   src = fetchurl {
-    url = http://www.math.technion.ac.il/pub/zsh/zsh-4.3.5.tar.bz2;
+    url = mirror://sourceforge/zsh/zsh-4.3.5.tar.bz2;
     sha256 = "0191j3liflkjrj39i2yrs3ab9jcx4zd93rirx3j17dymfgqlvrzb";
   };
   configureFlags = "--with-tcsetpgrp --enable-maildir-support --enable-multibyte";