diff --git a/pkgs/tools/networking/polygraph/default.nix b/pkgs/tools/networking/polygraph/default.nix
index 46680ab47af4..c05e44fb1c07 100644
--- a/pkgs/tools/networking/polygraph/default.nix
+++ b/pkgs/tools/networking/polygraph/default.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl, openssl, zlib, ncurses }:
 
 stdenv.mkDerivation rec {
-  name = "polygraph-4.11.0";
+  name = "polygraph-4.12.0";
 
   src = fetchurl {
     url = "http://www.web-polygraph.org/downloads/srcs/${name}-src.tgz";
-    sha256 = "1ii60yl3p89qawvl19sd1bkpkw39fz8kpvmc3cawa32nxzbm9pbs";
+    sha256 = "1anrdc30yi9pb67642flmn7w82q37cnc45r9bh15mpbc66yk3kzz";
   };
 
   buildInputs = [ openssl zlib ncurses ];