diff --git a/pkgs/development/libraries/libviper/default.nix b/pkgs/development/libraries/libviper/default.nix
index b292580e7052..f82581b10977 100644
--- a/pkgs/development/libraries/libviper/default.nix
+++ b/pkgs/development/libraries/libviper/default.nix
@@ -1,10 +1,10 @@
 {stdenv, fetchurl, pkgconfig, glib, ncurses, gpm}:
 stdenv.mkDerivation rec {
-  name = "libviper-1.4.5";
+  name = "libviper-1.4.6";
 
   src = fetchurl {
     url = "mirror://sourceforge/libviper/${name}.tar.gz";
-    sha256 = "1lryqv9xfsshx8x8c858h8fmsi2fkja0mhw415wa2bj9cqyb8byz";
+    sha256 = "1jvm7wdgw6ixyhl0pcfr9lnr9g6sg6whyrs9ihjiz0agvqrgvxwc";
   };
 
   patchPhase = ''