diff --git a/Cargo.lock b/Cargo.lock
index e97fa50c..a502e9bf 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -991,9 +991,9 @@ checksum = "5ee073c9e4cd00e28217186dbe12796d692868f432bf2e97ee73bed0c56dfa01"
 
 [[package]]
 name = "syn"
-version = "2.0.90"
+version = "2.0.91"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "919d3b74a5dd0ccd15aeb8f93e7006bd9e14c295087c9896a110f490752bcf31"
+checksum = "d53cbcb5a243bd33b7858b1d7f4aca2153490815872d86d955d6ea29f743c035"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/typify-impl/Cargo.toml b/typify-impl/Cargo.toml
index 873c133d..dfa4f136 100644
--- a/typify-impl/Cargo.toml
+++ b/typify-impl/Cargo.toml
@@ -17,7 +17,7 @@ schemars = "0.8.21"
 semver = "1.0.24"
 serde = "1.0.216"
 serde_json = "1.0.133"
-syn = { version = "2.0.90", features = ["full"] }
+syn = { version = "2.0.91", features = ["full"] }
 thiserror = "2.0.7"
 unicode-ident = "1.0.14"
 
@@ -29,5 +29,5 @@ paste = "1.0.15"
 rustfmt-wrapper = "0.2.1"
 schema = "0.1.0"
 schemars = { version = "0.8.21", features = ["uuid1", "impl_json_schema"] }
-syn = { version = "2.0.90", features = ["full", "extra-traits", "visit-mut"] }
+syn = { version = "2.0.91", features = ["full", "extra-traits", "visit-mut"] }
 uuid = "1.11.0"
diff --git a/typify-test/Cargo.toml b/typify-test/Cargo.toml
index 494bae92..d28f52ee 100644
--- a/typify-test/Cargo.toml
+++ b/typify-test/Cargo.toml
@@ -13,5 +13,5 @@ ipnetwork = { version = "0.20.0", features = ["schemars"] }
 prettyplease = "0.2.25"
 schemars = "0.8.21"
 serde = "1.0.216"
-syn = "2.0.90"
+syn = "2.0.91"
 typify = { path = "../typify" }