diff --git a/slog-extlog-derive/Cargo.toml b/slog-extlog-derive/Cargo.toml
index 9d42d02..654b445 100644
--- a/slog-extlog-derive/Cargo.toml
+++ b/slog-extlog-derive/Cargo.toml
@@ -13,7 +13,7 @@ edition = "2018"
 [dependencies]
 proc-macro2 = "1.0.68"
 slog = { version = "2.7", features = ['nested-values'] }
-syn = { version = "2.0.38", features = ["full", "extra-traits"] }
+syn = { version = "3.0.4", features = ["full", "extra-traits"] }
 quote = "1.0.33"
 
 [lib]