diff --git a/Cargo.toml b/Cargo.toml
index b6ca383..596c294 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,6 +33,7 @@ bytes = "1.11.1"
 arc-swap = "1.8.0"
 zeroize = ">=1.8, <1.9"
 hyper-util = ">=0.1, <0.1.21"
+tokio-util = ">=0.7, <0.7.20"
 
 [target.'cfg(any(target_os = "macos", target_os = "ios", target_os = "tvos", target_os = "watchos"))'.dependencies]
 security-framework = ">=3, <3.7"