diff --git a/Cargo.toml b/Cargo.toml
index 66f36b0..0a8a98f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -64,7 +64,7 @@ smtp-transport = ["base64", "nom"]
 unstable = []
 
 [package.metadata.docs.rs]
-features = ["async-std1", "tokio02"]
+all-features = true
 
 [[example]]
 name = "smtp"