diff --git a/pkgs/development/libraries/mtdev/default.nix b/pkgs/development/libraries/mtdev/default.nix
index e999ea73ae2e..7974e14040cd 100644
--- a/pkgs/development/libraries/mtdev/default.nix
+++ b/pkgs/development/libraries/mtdev/default.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
-  name = "mtdev-1.1.5";
+  name = "mtdev-1.1.6";
 
   src = fetchurl {
     url = "http://bitmath.org/code/mtdev/${name}.tar.bz2";
-    sha256 = "0zxs7shzgbalkvlaiibi25bd902rbmkv9n1lww6q8j3ri9qdaxv6";
+    sha256 = "1q700h9dqcm3zl6c3gj0qxxjcx6ibw2c51wjijydhwdcm26v5mqm";
   };
 
   meta = with stdenv.lib; {