diff --git a/pkgs/servers/x11/xorg/default.nix b/pkgs/servers/x11/xorg/default.nix
index dcd8341ee0fd..61db87acd555 100644
--- a/pkgs/servers/x11/xorg/default.nix
+++ b/pkgs/servers/x11/xorg/default.nix
@@ -3352,11 +3352,11 @@ self: with self; {
     }:
     stdenv.mkDerivation (finalAttrs: {
       pname = "xorg-server";
-      version = "21.1.18";
+      version = "21.1.20";
       builder = ./builder.sh;
       src = fetchurl {
-        url = "mirror://xorg/individual/xserver/xorg-server-21.1.18.tar.xz";
-        sha256 = "0lk3268gzpll547zvaa64rdhs4z89d7w567lbd55swl71n9x2y68";
+        url = "mirror://xorg/individual/xserver/xorg-server-21.1.20.tar.xz";
+        sha256 = "sha256-dpW8YYJLOoG2utL3iwVADKAVAD3kAtGzIhFxBbcC6Tc=";
       };
       hardeningDisable = [
         "bindnow"
diff --git a/pkgs/servers/x11/xorg/tarballs.list b/pkgs/servers/x11/xorg/tarballs.list
index 5307be640d4b..33aa31bf7c8d 100644
--- a/pkgs/servers/x11/xorg/tarballs.list
+++ b/pkgs/servers/x11/xorg/tarballs.list
@@ -77,4 +77,4 @@ mirror://xorg/individual/font/font-jis-misc-1.0.4.tar.xz
 mirror://xorg/individual/font/font-misc-meltho-1.0.4.tar.xz
 mirror://xorg/individual/font/font-misc-misc-1.1.3.tar.xz
 mirror://xorg/individual/lib/libXTrap-1.0.1.tar.bz2
-mirror://xorg/individual/xserver/xorg-server-21.1.18.tar.xz
+mirror://xorg/individual/xserver/xorg-server-21.1.20.tar.xz