diff --git a/nixos/modules/security/sudo.nix b/nixos/modules/security/sudo.nix
index 6aa9445eab65..e2e0a981ca92 100644
--- a/nixos/modules/security/sudo.nix
+++ b/nixos/modules/security/sudo.nix
@@ -163,9 +163,9 @@ in
                 };
 
                 options = mkOption {
-                  type = with types; listOf (enum [ "NOPASSWD" "PASSWD" "NOEXEC" "EXEC" "SETENV" "NOSETENV" "LOG_INPUT" "NOLOG_INPUT" "LOG_OUTPUT" "NOLOG_OUTPUT" ]);
+                  type = with types; listOf (enum [ "NOPASSWD" "PASSWD" "NOEXEC" "EXEC" "SETENV" "NOSETENV" "LOG_INPUT" "NOLOG_INPUT" "LOG_OUTPUT" "NOLOG_OUTPUT" "MAIL" "NOMAIL" "FOLLOW" "NOFLLOW" "INTERCEPT" "NOINTERCEPT"]);
                   description = mdDoc ''
-                    Options for running the command. Refer to the [sudo manual](https://www.sudo.ws/man/1.7.10/sudoers.man.html).
+                    Options for running the command. Refer to the [sudo manual](https://www.sudo.ws/docs/man/1.9.15/sudoers.man/#Tag_Spec).
                   '';
                   default = [];
                 };
diff --git a/pkgs/tools/security/sudo/default.nix b/pkgs/tools/security/sudo/default.nix
index 996baca2567f..a2501cb34f58 100644
--- a/pkgs/tools/security/sudo/default.nix
+++ b/pkgs/tools/security/sudo/default.nix
@@ -14,6 +14,8 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "sudo";
+  # be sure to check if nixos/modules/security/sudo.nix needs updating when bumping
+  # e.g. links to man pages, value constraints etc.
   version = "1.9.15p5";
 
   src = fetchurl {