diff --git a/tokio/Cargo.toml b/tokio/Cargo.toml
index 38a9a6d4667..bd34bb56b0c 100644
--- a/tokio/Cargo.toml
+++ b/tokio/Cargo.toml
@@ -100,7 +100,7 @@ once_cell = { version = "1.5.2", optional = true }
 memchr = { version = "2.2", optional = true }
 mio = { version = "0.7.6", optional = true }
 num_cpus = { version = "1.8.0", optional = true }
-parking_lot = { version = "0.11.0", optional = true }
+parking_lot = { version = "0.12.0", optional = true }
 
 # Currently unstable. The API exposed by these features may be broken at any time.
 # Requires `--cfg tokio_unstable` to enable.