diff --git a/Cargo.toml b/Cargo.toml
index 05f9240..06ce35f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,4 +23,4 @@ features = ["prost", "transport"]
 
 [dev-dependencies]
 tokio = { version = "1.37", features = [ "rt-multi-thread", "macros" ] }
-tower = "0.4"
+tower = "0.5"