diff --git a/quinn/Cargo.toml b/quinn/Cargo.toml
index 02117bd72..b8bfb2073 100644
--- a/quinn/Cargo.toml
+++ b/quinn/Cargo.toml
@@ -33,7 +33,7 @@ codecov = { repository = "djc/quinn" }
 maintenance = { status = "experimental" }
 
 [dependencies]
-async-io = { version = "1.6", optional = true }
+async-io = { version = "2.0", optional = true }
 async-std = { version = "1.11", optional = true }
 bytes = "1"
 # Enables futures::io::{AsyncRead, AsyncWrite} support for streams