diff --git a/pkgs/servers/x11/xorg/default.nix b/pkgs/servers/x11/xorg/default.nix
index c328e6ed166..8c654b0f992 100644
--- a/pkgs/servers/x11/xorg/default.nix
+++ b/pkgs/servers/x11/xorg/default.nix
@@ -703,11 +703,11 @@ lib.makeScope newScope (self: with self; {
   }) {};
 
   libX11 = callPackage ({ stdenv, pkgconfig, fetchurl, xorgproto, libxcb, xtrans }: stdenv.mkDerivation {
-    name = "libX11-1.6.7";
+    name = "libX11-1.6.8";
     builder = ./builder.sh;
     src = fetchurl {
-      url = mirror://xorg/individual/lib/libX11-1.6.7.tar.bz2;
-      sha256 = "0j0k5bjz4kd7rx6z09n5ggxbzbi84wf78xx25ikx6jmsxwq9w3li";
+      url = mirror://xorg/individual/lib/libX11-1.6.8.tar.bz2;
+      sha256 = "1mbkwhhprhf49s2iwx7kiliprsdvd690zk44x3h53ql9q52si2dj";
     };
     hardeningDisable = [ "bindnow" "relro" ];
     nativeBuildInputs = [ pkgconfig ];
diff --git a/pkgs/servers/x11/xorg/tarballs.list b/pkgs/servers/x11/xorg/tarballs.list
index 23fa9d774e7..df877566b4a 100644
--- a/pkgs/servers/x11/xorg/tarballs.list
+++ b/pkgs/servers/x11/xorg/tarballs.list
@@ -177,7 +177,7 @@ mirror://xorg/individual/lib/libICE-1.0.9.tar.bz2
 mirror://xorg/individual/lib/libpciaccess-0.16.tar.bz2
 mirror://xorg/individual/lib/libSM-1.2.3.tar.bz2
 mirror://xorg/individual/lib/libWindowsWM-1.0.1.tar.bz2
-mirror://xorg/individual/lib/libX11-1.6.7.tar.bz2
+mirror://xorg/individual/lib/libX11-1.6.8.tar.bz2
 mirror://xorg/individual/lib/libXau-1.0.9.tar.bz2
 mirror://xorg/individual/lib/libXaw-1.0.13.tar.bz2
 mirror://xorg/individual/lib/libXaw3d-1.6.3.tar.bz2