diff --git a/pkgs/tools/system/facter/default.nix b/pkgs/tools/system/facter/default.nix
index 9f97a403159..b66cd7d6112 100644
--- a/pkgs/tools/system/facter/default.nix
+++ b/pkgs/tools/system/facter/default.nix
@@ -2,10 +2,10 @@
 
 stdenv.mkDerivation rec {
   name = "facter-${version}";
-  version = "3.6.0";
+  version = "3.6.4";
 
   src = fetchFromGitHub {
-    sha256 = "1fwvjd84nw39lgclkz4kn90z84fs9lsama3ikq0qs1in3y3jfmvi";
+    sha256 = "177mmg5a4s4q2p76df4z6c51nfnr73qya1pvvj6fcs1gld01xjr6";
     rev = version;
     repo = "facter";
     owner = "puppetlabs";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e04319607ef..98cb5fab137 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -923,7 +923,6 @@ with pkgs;
 
   facter = callPackage ../tools/system/facter {
     boost = boost160;
-    ruby = ruby_2_1;
   };
 
   fasd = callPackage ../tools/misc/fasd { };