diff --git a/pkgs/servers/x11/xorg/default.nix b/pkgs/servers/x11/xorg/default.nix
index 38d175d04bcf..d9c562b3c822 100644
--- a/pkgs/servers/x11/xorg/default.nix
+++ b/pkgs/servers/x11/xorg/default.nix
@@ -1015,11 +1015,11 @@ lib.makeScope newScope (self: with self; {
   }) {};
 
   libXt = callPackage ({ stdenv, pkgconfig, fetchurl, libICE, xorgproto, libSM, libX11 }: stdenv.mkDerivation {
-    name = "libXt-1.1.5";
+    name = "libXt-1.2.0";
     builder = ./builder.sh;
     src = fetchurl {
-      url = mirror://xorg/individual/lib/libXt-1.1.5.tar.bz2;
-      sha256 = "06lz6i7rbrp19kgikpaz4c97fw7n31k2h2aiikczs482g2zbdvj6";
+      url = mirror://xorg/individual/lib/libXt-1.2.0.tar.bz2;
+      sha256 = "0cbqlyssr8aia88c8i7z59z9d0kp3p2hp6683xhz9ndyv8qza7dk";
     };
     hardeningDisable = [ "bindnow" "relro" ];
     nativeBuildInputs = [ pkgconfig ];
diff --git a/pkgs/servers/x11/xorg/tarballs.list b/pkgs/servers/x11/xorg/tarballs.list
index 50c87b4dda04..83780f1026c1 100644
--- a/pkgs/servers/x11/xorg/tarballs.list
+++ b/pkgs/servers/x11/xorg/tarballs.list
@@ -203,7 +203,7 @@ mirror://xorg/individual/lib/libXres-1.2.0.tar.bz2
 mirror://xorg/individual/lib/libXScrnSaver-1.2.3.tar.bz2
 mirror://xorg/individual/lib/libxshmfence-1.3.tar.bz2
 mirror://xorg/individual/lib/libXTrap-1.0.1.tar.bz2
-mirror://xorg/individual/lib/libXt-1.1.5.tar.bz2
+mirror://xorg/individual/lib/libXt-1.2.0.tar.bz2
 mirror://xorg/individual/lib/libXtst-1.2.3.tar.bz2
 mirror://xorg/individual/lib/libXv-1.0.11.tar.bz2
 mirror://xorg/individual/lib/libXvMC-1.0.11.tar.bz2