diff --git a/candid_client/Cargo.toml b/candid_client/Cargo.toml
index 75ec1f7..4cb31ae 100644
--- a/candid_client/Cargo.toml
+++ b/candid_client/Cargo.toml
@@ -12,4 +12,4 @@ keywords = ["CAN", "SocketCAN"]
 
 [dev-dependencies]
 clap = "^2.32"
-rand = "*"
+rand = "^0.6"