Add dependencies explanation to book

5 years ago · c9d8b197ca
parent 393b72e4fc
commit c9d8b197ca
1 changed files with 8 additions and 0 deletions
--- a/docs/src/tutorial/specification.md
+++ b/docs/src/tutorial/specification.md
@ -45,3 +45,11 @@ $ rustup override add nightly
 $ rustc --version
 rustc 1.38.0-nightly (c4715198b 2019-08-05)
 ```
+
+Add the following lines to `Cargo.toml`:
+
+```toml
+[dependencies]
+futures-preview = { version = "0.3.0-alpha.18", features = [ "async-await", "nightly" ] }
+async-std = "0.99"
+```