diff --git a/Cargo.lock b/Cargo.lock
index b14c23b..d2ae714 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -207,9 +207,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.63"
+version = "1.0.64"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fd9bc7ccc2688b3344c2f48b9b546648b25ce0b20fc717ee7fa7981a8ca9717"
+checksum = "3fd9d1e9976102a03c542daa2eff1b43f9d72306342f3f8b3ed5fb8908195d6f"
 dependencies = [
  "proc-macro2",
  "quote",