diff --git a/Cargo.toml b/Cargo.toml
index af537d96c76..a4cd594cbe6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,6 +7,7 @@ homepage = "https://crates.io"
 repository = "https://github.com/rust-lang/cargo"
 documentation = "https://docs.rs/cargo"
 readme = "README.md"
+rust-version = "1.58"
 description = """
 Cargo, a package manager for Rust.
 """