diff --git a/macro/Cargo.toml b/macro/Cargo.toml
index ae7ecdc..c2bf370 100644
--- a/macro/Cargo.toml
+++ b/macro/Cargo.toml
@@ -22,7 +22,7 @@ ident_case = "1"
 fnv = "1"
 indexmap = "2"
 convert_case = "0.11"
-syn = { version = "2", features = ["full", "fold", "extra-traits", "visit"] }
+syn = { version = "3", features = ["full", "fold", "extra-traits", "visit"] }
 phf_shared = { version = "0.13", optional = true }
 phf_generator = { version = "0.13", optional = true }