diff --git a/Cargo.toml b/Cargo.toml
index c06ab2d..2840f00 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,4 +22,4 @@ futures-io = "0.3.5"
 
 [dev-dependencies]
 futures = { version = "0.3.5", default-features = false, features = ["std"] }
-smol = "1"
+smol = "2"