diff --git a/Cargo.lock b/Cargo.lock
index 30a194a..85ffd53 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -934,9 +934,9 @@ checksum = "6446ced80d6c486436db5c078dde11a9f73d42b57fb273121e160b84f63d894c"
 
 [[package]]
 name = "syn"
-version = "1.0.57"
+version = "1.0.64"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4211ce9909eb971f111059df92c45640aad50a619cf55cd76476be803c4c68e6"
+checksum = "3fd9d1e9976102a03c542daa2eff1b43f9d72306342f3f8b3ed5fb8908195d6f"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index 0be73cd..ade122f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ directories = "3.0.1"
 clap = "2.33"
 notify = "4.0"
 toml = "0.5.6"
-syn = "=1.0.57"
+syn = "=1.0.64"
 
 [dependencies.cursive]
 version = "0.16"