diff --git a/pkgs/servers/samba/4.x.nix b/pkgs/servers/samba/4.x.nix
index 7e1ae7f60326..a0fecc183656 100644
--- a/pkgs/servers/samba/4.x.nix
+++ b/pkgs/servers/samba/4.x.nix
@@ -19,11 +19,11 @@ with lib;
 
 stdenv.mkDerivation rec {
   name = "samba-${version}";
-  version = "4.6.11";
+  version = "4.7.4";
 
   src = fetchurl {
     url = "mirror://samba/pub/samba/stable/${name}.tar.gz";
-    sha256 = "07gd41y4ajdiansfqa8c5wvrincgddfzyfgh1pf7g388zaq7l6q5";
+    sha256 = "0iw290n0q4l5s92d0f9yz27yp3rdfr6bvsmvg1xvd19g8p2d04pv";
   };
 
   outputs = [ "out" "dev" "man" ];