diff --git a/Cargo.lock b/Cargo.lock
index d2843b17..4952d78d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -245,7 +245,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -371,7 +371,7 @@ dependencies = [
  "schemars",
  "serde",
  "serde_json",
- "syn 2.0.118",
+ "syn 3.0.2",
  "typify",
 ]
 
@@ -573,7 +573,7 @@ checksum = "2a8c8b344124222efd714b73bb41f8b5120b27a7cc1c75593a6ff768d9d05aa4"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -742,7 +742,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
 dependencies = [
  "proc-macro2",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -871,7 +871,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "schema-derive",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -883,7 +883,7 @@ dependencies = [
  "paste",
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -908,7 +908,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde_derive_internals",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -959,7 +959,7 @@ checksum = "330f01ce65a3a5fe59a60c82f3c9a024b573b8a6e875bd233fe5f934e71d54e3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1002,7 +1002,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1034,9 +1034,9 @@ checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
 
 [[package]]
 name = "syn"
-version = "2.0.118"
+version = "2.0.119"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b9ae57f904213ebb649ce6895b8a66c66f0203b9319718f69a5612a065b1422"
+checksum = "872831b642d1a07999a962a351ed35b955ea2cfc8f3862091e2a240a84f17297"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1114,7 +1114,7 @@ checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1125,7 +1125,7 @@ checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1318,7 +1318,7 @@ dependencies = [
  "semver",
  "serde",
  "serde_json",
- "syn 2.0.118",
+ "syn 3.0.2",
  "thiserror 2.0.18",
  "unicode-ident",
  "uuid",
@@ -1335,7 +1335,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_tokenstream",
- "syn 2.0.118",
+ "syn 3.0.2",
  "typify-impl",
 ]
 
@@ -1349,7 +1349,7 @@ dependencies = [
  "schemars",
  "serde",
  "serde_json",
- "syn 2.0.118",
+ "syn 3.0.2",
  "typify",
 ]
 
@@ -1456,7 +1456,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
  "wasm-bindgen-shared",
 ]
 
@@ -1478,7 +1478,7 @@ checksum = "f0eb82fcb7930ae6219a7ecfd55b217f5f0893484b7a13022ebb2b2bf20b5283"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -1827,7 +1827,7 @@ dependencies = [
  "heck",
  "indexmap",
  "prettyplease",
- "syn 2.0.118",
+ "syn 2.0.119",
  "wasm-metadata",
  "wit-bindgen-core",
  "wit-component",
@@ -1843,7 +1843,7 @@ dependencies = [
  "prettyplease",
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
  "wit-bindgen-core",
  "wit-bindgen-rust",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 468084ed..b2a88b17 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -38,7 +38,7 @@ schemars = "0.8.22"
 semver = "1.0.28"
 serde = "1.0.228"
 serde_json = "1.0.150"
-syn = { version = "2.0.117", features = ["full"] }
+syn = { version = "3.0.2", features = ["full"] }
 tempfile = "3.27.0"
 thiserror = "2.0.18"
 trybuild = "1.0.116"
diff --git a/example-build/Cargo.toml b/example-build/Cargo.toml
index ca9a9d41..11764891 100644
--- a/example-build/Cargo.toml
+++ b/example-build/Cargo.toml
@@ -11,5 +11,5 @@ serde_json = "1.0"
 prettyplease = "0.2"
 schemars = "0.8"
 serde_json = "1.0"
-syn = "2.0"
+syn = "3.0"
 typify = { path = "../typify" }
diff --git a/typify-macro/Cargo.toml b/typify-macro/Cargo.toml
index e6a3a73d..e07ececb 100644
--- a/typify-macro/Cargo.toml
+++ b/typify-macro/Cargo.toml
@@ -18,5 +18,5 @@ semver = { version = "1.0.28", features = ["serde"] }
 serde = "1.0.228"
 serde_json = "1.0.150"
 serde_tokenstream = "0.2.3"
-syn = { version = "2.0", features = ["full", "extra-traits"] }
+syn = { version = "3.0", features = ["full", "extra-traits"] }
 typify-impl = { version = "0.7.0", path = "../typify-impl" }