diff --git a/pkgs/tools/security/paperkey/default.nix b/pkgs/tools/security/paperkey/default.nix
index 44cee21bc497..03af1b8a101a 100644
--- a/pkgs/tools/security/paperkey/default.nix
+++ b/pkgs/tools/security/paperkey/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   name = "paperkey-${version}";
-  version = "1.5";
+  version = "1.6";
 
   src = fetchurl {
     url = "http://www.jabberwocky.com/software/paperkey/${name}.tar.gz";
-    sha256 = "1prd2jaf4zjad3xhv160hmi5n408ssljfg7iz90jxs9w111pjwy4";
+    sha256 = "1xq5gni6gksjkd5avg0zpd73vsr97appksfx0gx2m38s4w9zsid2";
   };
 
   postPatch = ''