diff --git a/Cargo.toml b/Cargo.toml
index f73a0a6..badf2eb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,9 +28,9 @@ serde = { version = "1.0", default-features = false, optional = true }
 
 [dev-dependencies]
 criterion = "0.3"
-rustc-hex = "2.0"
-faster-hex = "0.4"
-version-sync = "0.8"
+rustc-hex = "2.1"
+faster-hex = "0.5"
+version-sync = "0.9"
 pretty_assertions = "0.6"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"