diff --git a/crates/crypto/Cargo.toml b/crates/crypto/Cargo.toml
index 4f64700..6955dbc 100644
--- a/crates/crypto/Cargo.toml
+++ b/crates/crypto/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["luozijun <luozijun.assistant@gmail.com>"]
 edition = "2018"
 
 [dependencies]
-rand                   = "0.7"
+rand                   = "0.8"
 base64                 = "0.10"
 ed25519-dalek          = "1.0.0-pre.1"
 chacha20-poly1305-aead = "0.1"