diff --git a/src/cargo/rust-ecosystem.md b/src/cargo/rust-ecosystem.md
index a9ae01a3..21b42403 100644
--- a/src/cargo/rust-ecosystem.md
+++ b/src/cargo/rust-ecosystem.md
@@ -11,7 +11,7 @@ The Rust ecosystem consists of a number of tools, of which the main ones are:
   runner which is used to execute unit tests.
 
 * `rustup`: the Rust toolchain installer and updater. This tool is used to
-  install and update `rustc` and `cargo` when new versions of Rust is released.
+  install and update `rustc` and `cargo` when new versions of Rust are released.
   In addition, `rustup` can also download documentation for the standard
   library. You can have multiple versions of Rust installed at once and `rustup`
   will let you switch between them as needed.