diff --git a/Cargo.toml b/Cargo.toml
index ae8f09f1..b7700636 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -34,7 +34,7 @@ crossbeam = { version = "0.2.8", optional = true }
 # Serve feature
 iron = { version = "0.5", optional = true }
 staticfile = { version = "0.4", optional = true }
-ws = { version = "0.5.1", optional = true}
+ws = { version = "0.6", optional = true}
 
 # Tests
 [dev-dependencies]