diff --git a/pkgs/servers/x11/xorg/default.nix b/pkgs/servers/x11/xorg/default.nix
index 81ce111ecacc..c641b88501b2 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 = "libX11-1.6.8";
+    name = "libX11-1.6.12";
     builder = ./builder.sh;
     src = fetchurl {
-      url = "mirror://xorg/individual/lib/libX11-1.6.8.tar.bz2";
-      sha256 = "1mbkwhhprhf49s2iwx7kiliprsdvd690zk44x3h53ql9q52si2dj";
+      url = "mirror://xorg/individual/lib/libX11-1.6.12.tar.bz2";
+      sha256 = "1ivfzl1qwk8zh7gc0m5vb58gdxz11jwg7w3d356w16j1d5s2427i";
     };
     hardeningDisable = [ "bindnow" "relro" ];
     nativeBuildInputs = [ pkgconfig ];
diff --git a/pkgs/servers/x11/xorg/overrides.nix b/pkgs/servers/x11/xorg/overrides.nix
index 018b44a663dd..74e33b8eb4c4 100644
--- a/pkgs/servers/x11/xorg/overrides.nix
+++ b/pkgs/servers/x11/xorg/overrides.nix
@@ -82,13 +82,6 @@ self: super:
 
   libX11 = super.libX11.overrideAttrs (attrs: {
     outputs = [ "out" "dev" "man" ];
-    patches = [
-      # Fixes an issue that happens when cross-compiling for us.
-      (fetchpatch {
-        url = "https://cgit.freedesktop.org/xorg/lib/libX11/patch/?id=0327c427d62f671eced067c6d9b69f4e216a8cac";
-        sha256 = "11k2mx56hjgw886zf1cdf2nhv7052d5rggimfshg6lq20i38vpza";
-      })
-    ];
     configureFlags = attrs.configureFlags or []
       ++ malloc0ReturnsNullCrossFlag;
     depsBuildBuild = [ buildPackages.stdenv.cc ];
diff --git a/pkgs/servers/x11/xorg/tarballs.list b/pkgs/servers/x11/xorg/tarballs.list
index ae75b1384017..67602696b9cb 100644
--- a/pkgs/servers/x11/xorg/tarballs.list
+++ b/pkgs/servers/x11/xorg/tarballs.list
@@ -177,7 +177,7 @@ mirror://xorg/individual/lib/libICE-1.0.10.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/libX11-1.6.8.tar.bz2
+mirror://xorg/individual/lib/libX11-1.6.12.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