diff --git a/Cargo.lock b/Cargo.lock
index 5c87cf8e54..1c61615049 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1048,7 +1048,7 @@ dependencies = [
  "insta 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lalrpop-intern 0.15.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ra_arena 0.1.0",
  "ra_db 0.1.0",
  "ra_hir_def 0.1.0",
diff --git a/crates/ra_hir_ty/Cargo.toml b/crates/ra_hir_ty/Cargo.toml
index 70216ab240..027b508657 100644
--- a/crates/ra_hir_ty/Cargo.toml
+++ b/crates/ra_hir_ty/Cargo.toml
@@ -10,7 +10,7 @@ doctest = false
 [dependencies]
 log = "0.4.5"
 rustc-hash = "1.0"
-parking_lot = "0.9.0"
+parking_lot = "0.10.0"
 ena = "0.13"
 
 ra_syntax = { path = "../ra_syntax" }