diff --git a/pkgs/tools/security/rng-tools/default.nix b/pkgs/tools/security/rng-tools/default.nix
index 446e25772f1..989b84ef957 100644
--- a/pkgs/tools/security/rng-tools/default.nix
+++ b/pkgs/tools/security/rng-tools/default.nix
@@ -1,12 +1,12 @@
 { stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
-  name = "rng-tools-4";
+  name = "rng-tools-5";
 
   src = fetchurl {
     url = "mirror://sourceforge/gkernel/${name}.tar.gz";
 
-    sha256 = "15f17j3lxn1v2mhdxvy3pahz41hn1vlnnm81c0qyh19c4bady6xp";
+    sha256 = "13h7lc8wl9khhvkr0i3bl5j9bapf8anhqis1lcnwxg1vc2v058b0";
   };
 
   meta = {