diff --git a/Cargo.toml b/Cargo.toml
index dbf06c2..8141a50 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -51,7 +51,8 @@ tokio = { version = "1.19.2", features = [
   "io-util",
   "fs",
   "time",
-  "rt-multi-thread"
+  "rt-multi-thread",
+  "parking_lot",
 ] }
 toml = "0.5.9"