diff --git a/pkgs/development/libraries/libxcomp/default.nix b/pkgs/development/libraries/libxcomp/default.nix
index 09888035b81..f2a903a21da 100644
--- a/pkgs/development/libraries/libxcomp/default.nix
+++ b/pkgs/development/libraries/libxcomp/default.nix
@@ -1,12 +1,12 @@
 { stdenv, fetchurl, autoconf, libjpeg, libpng12, libX11, zlib }:
 
-let version = "3.5.0.30"; in
+let version = "3.5.0.31"; in
 stdenv.mkDerivation {
   name = "libxcomp-${version}";
 
   src = fetchurl {
     url = "http://code.x2go.org/releases/source/nx-libs/nx-libs-${version}-full.tar.gz";
-    sha256 = "0npwlfv9p5fwnf30fpkfw08mq11pgbvp3d2zgnhh8ykf3yj8dgv0";
+    sha256 = "0a31508wyfyblf6plag2djr4spra5kylcmgg99h83c60ylxxnc11";
   };
 
   meta = with stdenv.lib; {
diff --git a/pkgs/tools/admin/nxproxy/default.nix b/pkgs/tools/admin/nxproxy/default.nix
index 098dd82eec7..8c973f0e53a 100644
--- a/pkgs/tools/admin/nxproxy/default.nix
+++ b/pkgs/tools/admin/nxproxy/default.nix
@@ -1,12 +1,12 @@
 { stdenv, fetchurl, autoconf, libxcomp }:
 
-let version = "3.5.0.30"; in
+let version = "3.5.0.31"; in
 stdenv.mkDerivation {
   name = "nxproxy-${version}";
 
   src = fetchurl {
     url = "http://code.x2go.org/releases/source/nx-libs/nx-libs-${version}-full.tar.gz";
-    sha256 = "0npwlfv9p5fwnf30fpkfw08mq11pgbvp3d2zgnhh8ykf3yj8dgv0";
+    sha256 = "0a31508wyfyblf6plag2djr4spra5kylcmgg99h83c60ylxxnc11";
   };
 
   meta = with stdenv.lib; {