diff --git a/README.md b/README.md
index 19358098..a35a5bac 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ GitHub Action for installing development tools (mainly from GitHub Releases).
   - [Example workflow](#example-workflow)
 - [Supported tools](#supported-tools)
 - [Security](#security)
+- [Compatibility](#compatibility)
 - [Related Projects](#related-projects)
 - [License](#license)
 
@@ -101,6 +102,14 @@ When installing the tool from GitHub Releases, this action will download the too
 
 If you want a higher level of security, consider working on [#1](https://github.com/taiki-e/install-action/issues/1).
 
+## Compatibility
+
+This action has been tested for GitHub-hosted runners (Ubuntu, macOS, Windows) and containers (Ubuntu, Debian, Alpine).
+To use this action in self-hosted runners or in containers, you will need to install at least the following:
+
+- bash
+- cargo (if you install cargo subcommands)
+
 ## Related Projects
 
 - [create-gh-release-action]: GitHub Action for creating GitHub Releases based on changelog.