diff --git a/Cargo.lock b/Cargo.lock
index 63a6391c..db7fbbd2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -335,9 +335,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.81"
+version = "1.0.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2afee18b8beb5a596ecb4a2dce128c719b4ba399d34126b9e4396e3f9860966"
+checksum = "a684ac3dcd8913827e18cd09a68384ee66c1de24157e3c556c9ab16d85695fb7"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/propfuzz-macro/Cargo.toml b/propfuzz-macro/Cargo.toml
index 97b9f3a1..26f8e0e7 100644
--- a/propfuzz-macro/Cargo.toml
+++ b/propfuzz-macro/Cargo.toml
@@ -26,7 +26,7 @@ path = "src/lib.rs"
 [dependencies]
 proc-macro2 = "1.0.29"
 quote = "1.0.10"
-syn = { version = "1.0.81", features = ["extra-traits", "full"] }
+syn = { version = "1.0.85", features = ["extra-traits", "full"] }
 
 [dev-dependencies]
 propfuzz = { path = "../propfuzz" }