diff --git a/num_enum_derive/Cargo.toml b/num_enum_derive/Cargo.toml
index 193df80..29b9042 100644
--- a/num_enum_derive/Cargo.toml
+++ b/num_enum_derive/Cargo.toml
@@ -34,4 +34,4 @@ features = ["external_doc"]
 proc-macro2 = "1"
 proc-macro-crate = { version = "1", optional = true }
 quote = "1"
-syn = { version = "2.0.10", features = ["parsing"] }
+syn = { version = "2", features = ["parsing"] }