diff --git a/Cargo.toml b/Cargo.toml
index 329f2ae..3ebaa91 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ openssl = "^0.9"
 rustc-serialize = "^0.3"
 rust-crypto = "^0.2"
 time = "^0.1"
-uuid = { version = "^0.4", features = ["v4"] }
+uuid = { version = ">=0.4, <0.6", features = ["v4"] }
 
 [dev-dependencies]
 env_logger = "^0.4"