diff --git a/pkgs/development/libraries/cgui/default.nix b/pkgs/development/libraries/cgui/default.nix
index da9d1122cc54..df75d3a1f1da 100644
--- a/pkgs/development/libraries/cgui/default.nix
+++ b/pkgs/development/libraries/cgui/default.nix
@@ -1,15 +1,15 @@
-{ stdenv, fetchurl, texinfo, allegro, perl }:
+{ stdenv, fetchurl, texinfo, allegro, perl, libX11 }:
 
 stdenv.mkDerivation rec {
   name = "cgui-${version}";
-  version="2.0.3";
+  version="2.1.0";
 
   src = fetchurl {
     url = "mirror://sourceforge/project/cgui/${version}/${name}.tar.gz";
-    sha256 = "00kk4xaw68m44awy8zq4g5plx372swwccvzshn68a0a8f3f2wi4x";
+    sha256 = "1pp1hvidpilq37skkmbgba4lvzi01rasy04y0cnas9ck0canv00s";
   };
 
-  buildInputs = [ texinfo allegro perl ];
+  buildInputs = [ texinfo allegro perl libX11 ];
 
   configurePhase = ''
     sh fix.sh unix