diff --git a/Cargo.toml b/Cargo.toml
index 1fcad52..e8a60bc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,4 +19,4 @@ chrono = "0.4"
 base64 = "0.12"
 image = "0.23"
 log = "0.4"
-parking_lot = "0.10"
+parking_lot = "0.11"