diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 40d78d3..2cfae25 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -19,4 +19,5 @@ cargo-release = "0.25.12"
 cargo-vet = "0.10.0"
 mdbook = "0.4.40"
 mdbook-admonish = "1.18.0"
+mdbook-linkcheck = "0.7.7"
 mdbook-mermaid = "0.14.0"