diff --git a/json/json_error/Cargo.toml b/json/json_error/Cargo.toml
index 1404699..7e9d79e 100644
--- a/json/json_error/Cargo.toml
+++ b/json/json_error/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Kai Yao <kai.b.yao@gmail.com>"]
 edition = "2018"
 
 [dependencies]
-actix-web = "3"
+actix-web = "4.0.0-beta.21"
 failure = "0.1"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"