diff --git a/README.md b/README.md
index ad23a7a2..6489183e 100644
--- a/README.md
+++ b/README.md
@@ -127,9 +127,11 @@ Known environments affected by the above version requirements are CentOS 6 (EoL
 - [create-gh-release-action]: GitHub Action for creating GitHub Releases based on changelog.
 - [upload-rust-binary-action]: GitHub Action for building and uploading Rust binary to GitHub Releases.
 - [setup-cross-toolchain-action]: GitHub Action for setup toolchains for cross compilation and cross testing for Rust.
+- [checkout-action]: GitHub Action for checking out a repository. (Simplified actions/checkout alternative that does not depend on Node.js.)
 
 [cache-cargo-install-action]: https://github.com/taiki-e/cache-cargo-install-action
 [cargo-binstall]: https://github.com/cargo-bins/cargo-binstall
+[checkout-action]: https://github.com/taiki-e/checkout-action
 [create-gh-release-action]: https://github.com/taiki-e/create-gh-release-action
 [setup-cross-toolchain-action]: https://github.com/taiki-e/setup-cross-toolchain-action
 [upload-rust-binary-action]: https://github.com/taiki-e/upload-rust-binary-action