diff --git a/Cargo.toml b/Cargo.toml
index c5be7ea..67b81f6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,7 +26,7 @@ crossbeam-channel = "^0.3"
 parking_lot = "^0.7"
 hdrhistogram = "^6.1"
 fnv = "^1.0"
-hashbrown = "^0.1"
+hashbrown = "^0.3"
 quanta = "^0.2"
 serde = "^1.0"
 derivative = "^1.0"