diff --git a/Cargo.toml b/Cargo.toml
index b59e31b2..45aa805a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -49,7 +49,7 @@ once_cell = "1.5"
 
 cfg-if = "1.0"
 
-parking_lot = "0.11"
+parking_lot = "0.12"
 
 [dependencies.futures-util]
 version = "0.3"