diff --git a/README.md b/README.md
index e135acdd8..8133c56ba 100644
--- a/README.md
+++ b/README.md
@@ -468,6 +468,7 @@ The `asdf` core provides a [security policy](https://github.com/asdf-vm/asdf/sec
 | mkcert                        | [salasrod/asdf-mkcert](https://github.com/salasrod/asdf-mkcert)                                                 | [![Build Status](https://github.com/salasrod/asdf-mkcert/workflows/CI/badge.svg?branch=master)](https://github.com/salasrod/asdf-mkcert/actions)                                                                                  |
 | mlton                         | [asdf-community/asdf-mlton](https://github.com/asdf-community/asdf-mlton)                                       | [![Main workflow](https://github.com/asdf-community/asdf-mlton/workflows/Main%20workflow/badge.svg?branch=master)](https://github.com/asdf-community/asdf-mlton/actions)                                                          |
 | mockery                       | [cabify/asdf-mockery](https://github.com/cabify/asdf-mockery)                                                   | [![Build Status](https://travis-ci.org/cabify/asdf-mockery.svg?branch=master)](https://travis-ci.org/cabify/asdf-mockery)                                                                                                         |
+| Monarch                       | [nyuyuyu/asdf-monarch](https://github.com/nyuyuyu/asdf-monarch)                                                 | [![GitHub Actions Status](https://github.com/nyuyuyu/asdf-monarch/actions/workflows/build.yml/badge.svg)](https://github.com/nyuyuyu/asdf-monarch/actions)                                                                        |
 | mongo-tools                   | [itspngu/asdf-mongo-tools](https://github.com/itspngu/asdf-mongo-tools)                                         | [![CI](https://github.com/itspngu/asdf-mongo-tools/workflows/CI/badge.svg)](https://github.com/itspngu/asdf-mongo-tools/actions)                                                                                                  |
 | MongoDB                       | [sylph01/asdf-mongodb](https://github.com/sylph01/asdf-mongodb)                                                 | [![Build Status](https://travis-ci.org/sylph01/asdf-mongodb.svg?branch=master)](https://travis-ci.org/sylph01/asdf-mongodb)                                                                                                       |
 | mongosh                       | [itspngu/asdf-mongosh](https://github.com/itspngu/asdf-mongosh)                                                 | [![CI](https://github.com/itspngu/asdf-mongosh/workflows/CI/badge.svg)](https://github.com/itspngu/asdf-mongosh/actions)                                                                                                          |
diff --git a/plugins/monarch b/plugins/monarch
new file mode 100644
index 000000000..ada451947
--- /dev/null
+++ b/plugins/monarch
@@ -0,0 +1 @@
+repository = https://github.com/nyuyuyu/asdf-monarch.git