diff --git a/actix-threadpool/CHANGES.md b/actix-threadpool/CHANGES.md
index 69e3c8b5..fc45eee5 100644
--- a/actix-threadpool/CHANGES.md
+++ b/actix-threadpool/CHANGES.md
@@ -3,6 +3,7 @@
 ### Changed
 
 * Update `derive_more` to 0.15
+* Update `parking_lot` to 0.9
 
 ## [0.1.1] - 2019-06-05
 
diff --git a/actix-threadpool/Cargo.toml b/actix-threadpool/Cargo.toml
index 4ec48563..34ad0e2f 100644
--- a/actix-threadpool/Cargo.toml
+++ b/actix-threadpool/Cargo.toml
@@ -20,7 +20,7 @@ path = "src/lib.rs"
 [dependencies]
 derive_more = "0.15"
 futures = "0.1.25"
-parking_lot = "0.8"
+parking_lot = "0.9"
 lazy_static = "1.2"
 log = "0.4"
 num_cpus = "1.10"