diff --git a/Cargo.toml b/Cargo.toml
index d7a34fd..3defad8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -29,7 +29,6 @@ log = "0.3"
 memchr = "0.1"
 memmap = "0.2"
 num_cpus = "1"
-parking_lot = "0.3"
 regex = "0.1.75"
 regex-syntax = "0.3.5"
 rustc-serialize = "0.3"