diff --git a/pkgs/misc/screensavers/xlockmore/default.nix b/pkgs/misc/screensavers/xlockmore/default.nix
index a278b059d481..eb0209e3502b 100644
--- a/pkgs/misc/screensavers/xlockmore/default.nix
+++ b/pkgs/misc/screensavers/xlockmore/default.nix
@@ -3,10 +3,11 @@
 
 stdenv.mkDerivation rec {
 
-  name = "xlockmore-5.47";
+  name = "xlockmore-5.49";
   src = fetchurl {
-    url = "http://www.tux.org/~bagleyd/xlock/${name}.tar.xz";
-    sha256 = "138d79b8zc2hambbr9fnxp3fhihlcljgqns04zf0kv2f53pavqwl";
+    url = "http://sillycycle.com/xlock/${name}.tar.xz";
+    sha256 = "0n2pxm1qxg39h3qkqhbck312cmq7gbpj7hpv210y40kx9fj6biq3";
+    curlOpts = "--user-agent 'Mozilla/5.0'";
   };
 
   # Optionally, it can use GTK+.