diff --git a/Cargo.toml b/Cargo.toml
index 221add9c..b92d2355 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -58,5 +58,5 @@ num_cpus = "1"
 uuid = "1"
 tempfile = "3"
 cc = "1"
-syn = "2"
+syn = "3"
 quote = "1"