diff --git a/pkgs/development/libraries/ntbtls/default.nix b/pkgs/development/libraries/ntbtls/default.nix
index 391f96734d23..9a6d9c7194cf 100644
--- a/pkgs/development/libraries/ntbtls/default.nix
+++ b/pkgs/development/libraries/ntbtls/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "ntbtls";
-  version = "0.2.0";
+  version = "0.3.1";
 
   src = fetchurl {
     url = "mirror://gnupg/ntbtls/ntbtls-${version}.tar.bz2";
-    sha256 = "sha256-ZJ/nSjEdE+Q7FrJuuqkWZd22MpJbc5AlkurD7TBRnhc=";
+    sha256 = "sha256-iSIYH+9SO3e3FiXlYuTWlTInjqu9GLx0V52+FBNXKbo=";
   };
 
   outputs = [ "dev" "out" ];