diff --git a/macros/Cargo.toml b/macros/Cargo.toml
index fdf65a437..0a7a543d8 100644
--- a/macros/Cargo.toml
+++ b/macros/Cargo.toml
@@ -16,7 +16,7 @@ mime = "0.3"
 proc-macro2 = "1.0"
 proc-macro-error = "1.0"
 quote = "1.0"
-syn = { version = "1.0", features = ["full"] }
+syn = { version = "2.0", features = ["full"] }
 heck = { version = "0.4", optional = true }
 http = { version = "0.2", optional = true }
 lazy_static = { version = "1.4", optional = true }