diff --git a/Cargo.lock b/Cargo.lock
index 986d795..557ef3a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -50,7 +50,7 @@ dependencies = [
 
 [[package]]
 name = "arcw-lint-js"
-version = "0.1.15"
+version = "0.1.16"
 dependencies = [
  "annotate-snippets",
  "arcw-lint",
diff --git a/arcw-lint-js/Cargo.toml b/arcw-lint-js/Cargo.toml
index f4957a7..d0a9268 100644
--- a/arcw-lint-js/Cargo.toml
+++ b/arcw-lint-js/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "arcw-lint-js"
-version = "0.1.15"
+version = "0.1.16"
 edition = "2021"
 license = "MPL-2.0"
 rust-version = "1.60"
@@ -19,7 +19,7 @@ default = ["console_error_panic_hook"]
 
 [dependencies]
 annotate-snippets = "0.9.1"
-wasm-bindgen = { version = "0.2.81", features = [ "serde-serialize" ] }
+wasm-bindgen = { version = "0.2.81", features = ["serde-serialize"] }
 wasm-bindgen-futures = "0.4.31"
 console_error_panic_hook = { version = "0.1.7", optional = true }
 arcw-lint = { version = "0.1.0", path = "../arcw-lint" }
diff --git a/arcw-lint-js/tests/arcs/arc-9999.md b/arcw-lint-js/tests/arcs/arc-9999.md
new file mode 100644
index 0000000..2e4c284
--- /dev/null
+++ b/arcw-lint-js/tests/arcs/arc-9999.md
@@ -0,0 +1,40 @@
+---
+arc: 9999
+title: A sample proposal
+description: This proposal is a sample that should be considered
+author: John Doe (@johndoe), Jenny Doe <jenny.doe@example.com>
+discussions-to: https://github.com/algorandfoundation/ARCs/issues/
+status: Last Call
+last-call-deadline: 2020-01-01
+type: Standards Track
+category: Core
+sub-category: Smart Contract
+created: 2020-01-01
+---
+
+## Abstract
+This is the abstract for the arc.
+
+## Motivation
+This is the motivation for the arc.
+
+## Specification
+This is the specification for the arc.
+
+## Rationale
+This is the rationale for the arc.
+
+## Backwards Compatibility
+These are the backwards compatibility concerns for the arc.
+
+## Test Cases
+These are the test cases for the arc.
+
+## Reference Implementation
+This is the implementation for the arc.
+
+## Security Considerations
+These are the security considerations for the arc.
+
+## Copyright
+Copyright and related rights waived via [CC0](../LICENSE.md).
diff --git a/arcw-lint/src/lib.rs b/arcw-lint/src/lib.rs
index e6ce98f..0d0b830 100644
--- a/arcw-lint/src/lib.rs
+++ b/arcw-lint/src/lib.rs
@@ -174,6 +174,7 @@ pub fn default_lints() -> impl Iterator<Item = (&'static str, Box<dyn Lint>)> {
                 "last-call-deadline",
                 "type",
                 "category",
+                "sub-category",
                 "created",
                 "requires",
                 "withdrawal-reason",
@@ -182,6 +183,20 @@ pub fn default_lints() -> impl Iterator<Item = (&'static str, Box<dyn Lint>)> {
             ])
             .boxed(),
         ),
+        (
+            "preamble-enum-sub-category",
+            preamble::OneOf {
+                name: "sub-category",
+                values: &[
+                    "General",
+                    "Token",
+                    "Smart Contract",
+                    "Explorer",
+                    "Wallet"
+                ],
+            }
+            .boxed(),
+        ),
         ("preamble-date-created", preamble::Date("created").boxed()),
         (
             "preamble-req-last-call-deadline",