diff --git a/pkgs/servers/samba/4.x.nix b/pkgs/servers/samba/4.x.nix
index 9a5ebd9f63e..ed8744ef3c6 100644
--- a/pkgs/servers/samba/4.x.nix
+++ b/pkgs/servers/samba/4.x.nix
@@ -51,11 +51,11 @@ with lib;
 
 stdenv.mkDerivation rec {
   pname = "samba";
-  version = "4.18.5";
+  version = "4.18.6";
 
   src = fetchurl {
     url = "mirror://samba/pub/samba/stable/${pname}-${version}.tar.gz";
-    hash = "sha256-CVJWrDMuHZ+/m3/3gj+SoyM9PtZYzn/JszkFwiQ/RH8=";
+    hash = "sha256-KEyKmUzpich81oCMOQ/LnQDDayGg3BqKdUdLZ8nnFec=";
   };
 
   outputs = [ "out" "dev" "man" ];