diff --git a/Cargo.toml b/Cargo.toml
index 71995dc..dbb5fa5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ keywords = ["cache","ttl","expire"]
 license = "MIT/Apache-2.0"
 
 [dependencies]
-linked-hash-map = "0.5"
+linked-hash-map = "~0.5.3"
 
 
 [features]