diff --git a/Cargo.toml b/Cargo.toml
index 7fd768c..c23f58a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ mopa = "0.2.2"
 pin-project = "1.0.8"
 serde = { version = "1.0.126", features = ["derive"] }
 serde_cbor = "0.11.1"
-smallvec = { version = "1.6.1", features = ["union", "serde", "write"] }
+smallvec = { version = "1.6.1", features = ["union", "serde", "write", "const_generics"] }
 stackalloc = "1.1.1"
 tokio = { version = "0.2", features = ["full"] }
 tokio-uring = "0.1.0"