diff --git a/Cargo.toml b/Cargo.toml
index e4e86d4a..ae8f09f1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,8 +32,8 @@ time = { version = "0.1.34", optional = true }
 crossbeam = { version = "0.2.8", optional = true }
 
 # Serve feature
-iron = { version = "0.4", optional = true }
-staticfile = { version = "0.3", optional = true }
+iron = { version = "0.5", optional = true }
+staticfile = { version = "0.4", optional = true }
 ws = { version = "0.5.1", optional = true}
 
 # Tests