diff --git a/pkgs/applications/science/biology/kssd/default.nix b/pkgs/applications/science/biology/kssd/default.nix
index ef8a0ce136f..621a8ce1576 100644
--- a/pkgs/applications/science/biology/kssd/default.nix
+++ b/pkgs/applications/science/biology/kssd/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "kssd";
-  version = "1.0";
+  version = "1.1";
 
   src = fetchurl {
     url = "https://github.com/yhg926/public_${pname}/archive/v${version}.tar.gz";
-    sha256 = "a5dcaf520049a962bef625cb59a567ea2b4252d4dc9be28dd06123d340e03919";
+    sha256 = "1x3v31cxnww4w5zn15vy0bwk53llsa0f97ma6qbw89h152d2mx5x";
   };
 
   buildInputs = [ zlib automake autoconf libtool ];