diff --git a/epp-client/Cargo.toml b/epp-client/Cargo.toml
index c769d4f..d065f0f 100644
--- a/epp-client/Cargo.toml
+++ b/epp-client/Cargo.toml
@@ -28,5 +28,5 @@ webpki = "0.22"
 webpki-roots = "0.21"
 
 [dev-dependencies]
-tokio-test = "*"
+tokio-test = "0.4"
 regex = "1.5"