diff --git a/src/doc/src/reference/environment-variables.md b/src/doc/src/reference/environment-variables.md
index dcff9b7f81a..72f035d68e0 100644
--- a/src/doc/src/reference/environment-variables.md
+++ b/src/doc/src/reference/environment-variables.md
@@ -378,3 +378,5 @@ Cargo exposes this environment variable to 3rd party subcommands
 (ie. programs named `cargo-foobar` placed in `$PATH`):
 
 * `CARGO` — Path to the `cargo` binary performing the build.
+
+For extended information about your environment you may run `cargo metadata`.