diff --git a/Cargo.lock b/Cargo.lock
index a386b64..fa890a0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -321,9 +321,9 @@ checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
 [[package]]
 name = "syn"
-version = "1.0.60"
+version = "1.0.64"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c700597eca8a5a762beb35753ef6b94df201c81cca676604f547495a0d7f0081"
+checksum = "3fd9d1e9976102a03c542daa2eff1b43f9d72306342f3f8b3ed5fb8908195d6f"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index 8a09dcf..8079716 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ bindgen = "0.57.0"
 num_cpus = "1.13.0"
 proc-macro2 = "1.0.24"
 quote = "1.0.9"
-syn = { version = "1.0.60", features = [ "extra-traits", "full", "fold", "parsing" ] }
+syn = { version = "1.0.64", features = [ "extra-traits", "full", "fold", "parsing" ] }
 
 [dev-dependencies]
 serde_json = "1.0.62"