diff --git a/actix-threadpool/Cargo.toml b/actix-threadpool/Cargo.toml
index 84438e12..a2dbfb8a 100644
--- a/actix-threadpool/Cargo.toml
+++ b/actix-threadpool/Cargo.toml
@@ -20,7 +20,7 @@ path = "src/lib.rs"
 [dependencies]
 derive_more = "0.14"
 futures = "0.1.25"
-parking_lot = "0.7"
+parking_lot = "0.8"
 lazy_static = "1.2"
 log = "0.4"
 num_cpus = "1.10"