diff --git a/README.md b/README.md
index bf8cde3..1969d09 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,7 @@ The `asdf` core provides a [security policy](https://github.com/asdf-vm/asdf/sec
 | 1password-cli                 | [NeoHsu/asdf-1password-cli](https://github.com/NeoHsu/asdf-1password-cli)                             | [![Build](https://github.com/NeoHsu/asdf-1password-cli/workflows/Build/badge.svg)](https://github.com/neohsu/asdf-1password-cli/actions?query=workflow%3ABuild)                                                  |
 | act                           | [grimoh/asdf-act](https://github.com/grimoh/asdf-act)                                                 | [![GitHub Actions Status](https://github.com/grimoh/asdf-act/workflows/Main%20workflow/badge.svg?branch=master)](https://github.com/grimoh/asdf-act/actions)                                                     |
 | adr-tools                     | [td7x/asdf/adr-tools](https://gitlab.com/td7x/asdf/adr-tools)                                         | [![pipeline status](https://gitlab.com/td7x/asdf/adr-tools/badges/master/pipeline.svg)](https://gitlab.com/td7x/asdf/adr-tools/commits/master)                                                                   |
+| ag (the_silver_searcher)      | [koketani/asdf-ag](https://github.com/koketani/asdf-ag)                                               | [![GitHub Actions Status](https://github.com/koketani/asdf-ag/workflows/Build/badge.svg)](https://github.com/koketani/asdf-ag/actions)                                                                           |
 | aks-engine                    | [robsonpeixoto/aks-engine](https://gitlab.com/robsonpeixoto/asdf-aks-engine)                          | [![Build Status](https://travis-ci.org/robsonpeixoto/asdf-aks-engine.svg?branch=master)](https://travis-ci.org/robsonpeixoto/asdf-aks-engine)                                                                    |
 | alias                         | [andrewthauer/asdf-alias](https://github.com/andrewthauer/asdf-alias)                                 | [![Main workflow](https://github.com/andrewthauer/asdf-alias/workflows/Build/badge.svg?branch=master)](https://github.com/andrewthauer/asdf-alias/actions)                                                       |
 | allure                        | [comdotlinux/asdf-allure](https://github.com/comdotlinux/asdf-allure)                                 | [![Build](https://github.com/comdotlinux/asdf-allure2/actions/workflows/build.yml/badge.svg?branch=master)](https://github.com/comdotlinux/asdf-allure2/actions/workflows/build.yml)                             |
diff --git a/plugins/ag b/plugins/ag
new file mode 100644
index 0000000..da50af9
--- /dev/null
+++ b/plugins/ag
@@ -0,0 +1 @@
+repository = https://github.com/koketani/asdf-ag.git