diff --git a/distributed_macros/Cargo.toml b/distributed_macros/Cargo.toml
index 81fd26f8..527e3404 100644
--- a/distributed_macros/Cargo.toml
+++ b/distributed_macros/Cargo.toml
@@ -13,7 +13,7 @@ proc-macro = true
 proc-macro2 = "1.0"
 quote = "1.0"
 sha2 = "0.10"
-syn = { version = "2.0", features = ["full", "visit"] }
+syn = { version = "3.0", features = ["full", "visit"] }
 
 [dev-dependencies]
 # Compile-fail snapshots depend on trybuild's compiler-diagnostic normalization.