diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 9bc82d3b..1f5bc203 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.0.20"
+  ".": "0.0.21"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e9cfde43..62391789 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.0.21](https://github.com/mdn/rari/compare/v0.0.20...v0.0.21) (2024-11-18)
+
+
+### Features
+
+* **build:** generate contributors.txt ([b37d92b](https://github.com/mdn/rari/commit/b37d92b5ba76176a7702efbce2d222079f31dd16))
+* **serve:** support contributors.txt ([5dfe87a](https://github.com/mdn/rari/commit/5dfe87a57cf1a42002e43da32f2b9a1fb1631d26))
+
 ## [0.0.20](https://github.com/mdn/rari/compare/v0.0.19...v0.0.20) (2024-11-16)
 
 
diff --git a/Cargo.lock b/Cargo.lock
index b37d7d47..78e062b9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -550,14 +550,14 @@ dependencies = [
 
 [[package]]
 name = "css-definition-syntax"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "thiserror",
 ]
 
 [[package]]
 name = "css-syntax"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "anyhow",
  "css-definition-syntax",
@@ -574,7 +574,7 @@ dependencies = [
 
 [[package]]
 name = "css-syntax-types"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "regress",
  "serde",
@@ -814,7 +814,7 @@ dependencies = [
 
 [[package]]
 name = "diff-test"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "ansi-to-html",
  "anyhow",
@@ -2557,7 +2557,7 @@ dependencies = [
 
 [[package]]
 name = "rari"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "anyhow",
  "axum",
@@ -2581,7 +2581,7 @@ dependencies = [
 
 [[package]]
 name = "rari-data"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "chrono",
  "indexmap",
@@ -2594,7 +2594,7 @@ dependencies = [
 
 [[package]]
 name = "rari-deps"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "chrono",
  "css-syntax-types",
@@ -2609,7 +2609,7 @@ dependencies = [
 
 [[package]]
 name = "rari-doc"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "chrono",
  "constcat",
@@ -2661,14 +2661,14 @@ dependencies = [
 
 [[package]]
 name = "rari-linter"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "thiserror",
 ]
 
 [[package]]
 name = "rari-md"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "anyhow",
  "base64",
@@ -2681,7 +2681,7 @@ dependencies = [
 
 [[package]]
 name = "rari-templ-func"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "anyhow",
  "quote",
@@ -2691,7 +2691,7 @@ dependencies = [
 
 [[package]]
 name = "rari-tools"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "chrono",
  "console",
@@ -2716,7 +2716,7 @@ dependencies = [
 
 [[package]]
 name = "rari-types"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "chrono",
  "config",
@@ -2732,7 +2732,7 @@ dependencies = [
 
 [[package]]
 name = "rari-utils"
-version = "0.0.20"
+version = "0.0.21"
 dependencies = [
  "serde",
  "serde_json",
diff --git a/Cargo.toml b/Cargo.toml
index 44844651..bc6aab54 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rari"
-version = "0.0.20"
+version = "0.0.21"
 edition = "2021"
 license = "MPL-2.0"
 authors = [
diff --git a/crates/css-definition-syntax/Cargo.toml b/crates/css-definition-syntax/Cargo.toml
index f73078ad..94100889 100644
--- a/crates/css-definition-syntax/Cargo.toml
+++ b/crates/css-definition-syntax/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "css-definition-syntax"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/crates/css-syntax-types/Cargo.toml b/crates/css-syntax-types/Cargo.toml
index 33966cf3..dd1bd3d2 100644
--- a/crates/css-syntax-types/Cargo.toml
+++ b/crates/css-syntax-types/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "css-syntax-types"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/crates/css-syntax/Cargo.toml b/crates/css-syntax/Cargo.toml
index 20bad2ef..e78b7f7e 100644
--- a/crates/css-syntax/Cargo.toml
+++ b/crates/css-syntax/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "css-syntax"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/crates/diff-test/Cargo.toml b/crates/diff-test/Cargo.toml
index 6bf83a08..148b1d50 100644
--- a/crates/diff-test/Cargo.toml
+++ b/crates/diff-test/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "diff-test"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/crates/rari-data/Cargo.toml b/crates/rari-data/Cargo.toml
index 72228028..3541d446 100644
--- a/crates/rari-data/Cargo.toml
+++ b/crates/rari-data/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rari-data"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/crates/rari-deps/Cargo.toml b/crates/rari-deps/Cargo.toml
index 4ab92b37..f4600432 100644
--- a/crates/rari-deps/Cargo.toml
+++ b/crates/rari-deps/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rari-deps"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/crates/rari-doc/Cargo.toml b/crates/rari-doc/Cargo.toml
index a19a0bf9..154d209e 100644
--- a/crates/rari-doc/Cargo.toml
+++ b/crates/rari-doc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rari-doc"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/crates/rari-linter/Cargo.toml b/crates/rari-linter/Cargo.toml
index 2a67061f..e90ee54f 100644
--- a/crates/rari-linter/Cargo.toml
+++ b/crates/rari-linter/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rari-linter"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/crates/rari-md/Cargo.toml b/crates/rari-md/Cargo.toml
index a3d40e2a..7965d39b 100644
--- a/crates/rari-md/Cargo.toml
+++ b/crates/rari-md/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rari-md"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/crates/rari-templ-func/Cargo.toml b/crates/rari-templ-func/Cargo.toml
index d0df5b6e..82a6b793 100644
--- a/crates/rari-templ-func/Cargo.toml
+++ b/crates/rari-templ-func/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rari-templ-func"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/crates/rari-tools/Cargo.toml b/crates/rari-tools/Cargo.toml
index 9eba2568..4ff36e96 100644
--- a/crates/rari-tools/Cargo.toml
+++ b/crates/rari-tools/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rari-tools"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors = [
     "Andi Pieper <apieper@mozilla.com>",
diff --git a/crates/rari-types/Cargo.toml b/crates/rari-types/Cargo.toml
index 0f731c7d..d0002047 100644
--- a/crates/rari-types/Cargo.toml
+++ b/crates/rari-types/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rari-types"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/crates/rari-utils/Cargo.toml b/crates/rari-utils/Cargo.toml
index 58e33f0a..33dfa73b 100644
--- a/crates/rari-utils/Cargo.toml
+++ b/crates/rari-utils/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rari-utils"
-version = "0.0.20"
+version = "0.0.21"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/rari-npm/package-lock.json b/rari-npm/package-lock.json
index 0bb32bb2..d014c1bb 100644
--- a/rari-npm/package-lock.json
+++ b/rari-npm/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@mdn/rari",
-  "version": "0.0.20",
+  "version": "0.0.21",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@mdn/rari",
-      "version": "0.0.20",
+      "version": "0.0.21",
       "hasInstallScript": true,
       "license": "MPL-2.0",
       "dependencies": {
diff --git a/rari-npm/package.json b/rari-npm/package.json
index d7e3e111..6c96c7ad 100644
--- a/rari-npm/package.json
+++ b/rari-npm/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mdn/rari",
-  "version": "0.0.20",
+  "version": "0.0.21",
   "description": "npm package for rari",
   "main": "./lib/index.js",
   "types": "./lib/index.d.ts",