diff --git a/pkgs/tools/misc/kisslicer/default.nix b/pkgs/tools/misc/kisslicer/default.nix
index 2ec795e78e9..b6b56e1df93 100644
--- a/pkgs/tools/misc/kisslicer/default.nix
+++ b/pkgs/tools/misc/kisslicer/default.nix
@@ -18,11 +18,11 @@ let
 in
 
 stdenv.mkDerivation rec {
-  name = "kisslicer-1.6.2";
+  name = "kisslicer-1.6.3";
 
   src = fetchzip {
-    url = "http://www.kisslicer.com/uploads/1/5/3/8/15381852/kisslicer_linux64_1.6.2_release.zip";
-    sha256 = "0fb7hzic78skq3ykc37srnjsw0yri7m0pb3arlz076ws7jrcbr0f";
+    url = "http://www.kisslicer.com/uploads/1/5/3/8/15381852/kisslicer_linux64_1.6.3_release.zip";
+    sha256 = "1xmywj5jrcsqv1d5x3mphhvafs4mfm9l12npkhk7l03qxbwg9j82";
     stripRoot = false;
   };