diff --git a/codex-rs/Cargo.lock b/codex-rs/Cargo.lock
index 0b3b4f8dfd..99fcb6bedf 100644
--- a/codex-rs/Cargo.lock
+++ b/codex-rs/Cargo.lock
@@ -296,7 +296,7 @@ checksum = "614043c56c1173b800acb007b81fd0cbc0a0d7d717b71ba705fc2230d0760a23"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -514,7 +514,7 @@ checksum = "3109e49b1e4909e9db6515a30c633684d68cdeaa252f215214cb4fa1a5bfee2c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
  "synstructure",
 ]
 
@@ -526,7 +526,7 @@ checksum = "7b18050c2cd6fe86c3a76584ef5e0baf286d038cda203eb6223df2cc413565f7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -664,7 +664,7 @@ checksum = "3b43422f69d8ff38f95f1b2bb76517c91589a924d1559a0e935d7c8ce0274c11"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -704,7 +704,7 @@ checksum = "c7c24de15d275a1ecfd47a380fb4d5ec9bfe0933f309ed5e705b775596a3574d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -721,7 +721,7 @@ checksum = "9035ad2d096bed7955a320ee7e2230574d28fd3c3a0f186cbea1ff3c7eed5dbb"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1119,7 +1119,7 @@ checksum = "8d7396fd9500589e62e460e987ecb671bad374934e55ec3b5f498cc7a8a8a7b7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1321,7 +1321,7 @@ dependencies = [
  "regex",
  "rustc-hash 2.1.1",
  "shlex",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1505,7 +1505,7 @@ checksum = "f9abbd1bc6865053c427f7198e6af43bfdedc55ab791faed4fbd361d789575ff"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1588,7 +1588,7 @@ dependencies = [
  "darling 0.20.11",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1793,7 +1793,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -3099,7 +3099,7 @@ version = "0.0.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 3.0.3",
 ]
 
 [[package]]
@@ -5344,7 +5344,7 @@ checksum = "f46882e17999c6cc590af592290432be3bce0428cb0d5f8b6715e4dc7b383eb3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -5398,7 +5398,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim 0.11.1",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -5412,7 +5412,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim 0.11.1",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -5425,7 +5425,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim 0.11.1",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -5449,7 +5449,7 @@ checksum = "fc34b93ccb385b40dc71c6fceac4b2ad23662c7eeb248cf10d529b7e055b6ead"
 dependencies = [
  "darling_core 0.20.11",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -5460,7 +5460,7 @@ checksum = "d38308df82d1080de0afee5d069fa14b0326a88c14f15c5ccda35b4a6c414c81"
 dependencies = [
  "darling_core 0.21.3",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -5471,7 +5471,7 @@ checksum = "ac3984ec7bd6cfa798e62b4a642426a5be0e68f9401cfc2a01e3fa9ea2fcdb8d"
 dependencies = [
  "darling_core 0.23.0",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -5645,7 +5645,7 @@ checksum = "1e567bd82dcff979e4b03460c307b3cdc9e96fde3d73bed1496d2bc75d9dd62a"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -5675,7 +5675,7 @@ dependencies = [
  "convert_case 0.6.0",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
  "unicode-xid",
 ]
 
@@ -5689,7 +5689,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustc_version",
- "syn 2.0.117",
+ "syn 2.0.119",
  "unicode-xid",
 ]
 
@@ -5752,7 +5752,7 @@ dependencies = [
  "diplomat_core",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -5772,7 +5772,7 @@ dependencies = [
  "serde",
  "smallvec",
  "strck",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -5845,7 +5845,7 @@ checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -5870,7 +5870,7 @@ checksum = "9556bc800956545d6420a640173e5ba7dfa82f38d3ea5a167eb555bc69ac3323"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -5944,7 +5944,7 @@ checksum = "83e195b4945e88836d826124af44fdcb262ec01ef94d44f14f4fb5103f19892a"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -6074,7 +6074,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -6095,7 +6095,7 @@ checksum = "67c78a4d8fdf9953a5c9d458f9efe940fd97a0cab0941c075a813ac594733827"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -6298,7 +6298,7 @@ checksum = "a0aca10fb742cb43f9e7bb8467c91aa9bcb8e3ffbc6a6f7389bb93ffc920577d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -6647,7 +6647,7 @@ checksum = "e835b70203e41293343137df5c0664546da5745f82ec9b84d40be8336958447b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -8190,7 +8190,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim 0.11.1",
- "syn 2.0.117",
+ "syn 2.0.119",
  "unic-langid",
 ]
 
@@ -8204,7 +8204,7 @@ dependencies = [
  "i18n-config",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -8613,7 +8613,7 @@ dependencies = [
  "indoc",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -8764,7 +8764,7 @@ checksum = "2a8c8b344124222efd714b73bb41f8b5120b27a7cc1c75593a6ff768d9d05aa4"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -8809,7 +8809,7 @@ dependencies = [
  "quote",
  "rustc_version",
  "simd_cesu8",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -8828,7 +8828,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "38c0b942f458fe50cdac086d2f946512305e5631e720728f2a61aabcd47a6264"
 dependencies = [
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -9151,7 +9151,7 @@ dependencies = [
  "quote",
  "regex-syntax",
  "rustc_version",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -9273,7 +9273,7 @@ checksum = "5cf92c10c7e361d6b99666ec1c6f9805b0bea2c3bd8c78dc6fe98ac5bd78db11"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -9637,7 +9637,7 @@ checksum = "ed3955f1a9c7c0c15e092f9c887db08b1fc683305fdf6eb6684f22555355e202"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -9981,7 +9981,7 @@ checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -10240,7 +10240,7 @@ checksum = "838d17166587914f4e99353766c29160462b681511f08679545a0d07a0dc9415"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -10264,7 +10264,7 @@ dependencies = [
  "by_address",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -10379,7 +10379,7 @@ dependencies = [
  "pest_meta",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -10442,7 +10442,7 @@ dependencies = [
  "phf_shared",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -10471,7 +10471,7 @@ checksum = "6e918e4ff8c4549eb882f14b3a4bc8c8bc93de829416eacf579f1207a8fbf861"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -10699,7 +10699,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
 dependencies = [
  "proc-macro2",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -10739,7 +10739,7 @@ dependencies = [
  "proc-macro-error-attr2",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -10814,7 +10814,7 @@ dependencies = [
  "prost",
  "prost-types",
  "regex",
- "syn 2.0.117",
+ "syn 2.0.119",
  "tempfile",
 ]
 
@@ -10828,7 +10828,7 @@ dependencies = [
  "itertools 0.14.0",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -11266,7 +11266,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -11679,7 +11679,7 @@ checksum = "b7186006dcb21920990093f30e3dea63b7d6e977bf1256be20c3563a5db070da"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -11915,7 +11915,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rust-embed-utils",
- "syn 2.0.117",
+ "syn 2.0.119",
  "walkdir",
 ]
 
@@ -12210,7 +12210,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde_derive_internals",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -12222,7 +12222,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde_derive_internals",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -12520,7 +12520,7 @@ checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -12531,7 +12531,7 @@ checksum = "18d26a20a969b9e3fdf2fc2d9f21eda6c40e2de84c9408bb5d3b05d499aae711"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -12590,7 +12590,7 @@ checksum = "175ee3e80ae9982737ca543e96133087cbd9a485eecc3bc4de9c1a37b47ea59c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -12642,7 +12642,7 @@ dependencies = [
  "darling 0.21.3",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -12692,7 +12692,7 @@ checksum = "6f50427f258fb77356e4cd4aa0e87e2bd2c66dbcee41dc405282cae2bfc26c83"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -13025,7 +13025,7 @@ dependencies = [
  "quote",
  "sqlx-core",
  "sqlx-macros-core",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -13048,7 +13048,7 @@ dependencies = [
  "sqlx-mysql",
  "sqlx-postgres",
  "sqlx-sqlite",
- "syn 2.0.117",
+ "syn 2.0.119",
  "thiserror 2.0.18",
  "tokio",
  "url",
@@ -13221,7 +13221,7 @@ dependencies = [
  "dupe",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -13331,7 +13331,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ace6b48b7c4383a39bd3b966cca41bc999003aab9f690a2f355525c924296928"
 dependencies = [
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -13373,7 +13373,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -13385,7 +13385,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -13539,9 +13539,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.117"
+version = "2.0.119"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e665b8803e7b1d2a727f4023456bbbbe74da67099c585258af0ad9c5013b9b99"
+checksum = "872831b642d1a07999a962a351ed35b955ea2cfc8f3862091e2a240a84f17297"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -13576,7 +13576,7 @@ checksum = "728a70f3dbaf5bab7f0c4b1ac8d7ae5ea60a4b5549c8a5914361c99147a709d2"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -13828,7 +13828,7 @@ dependencies = [
  "cfg-if",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -13839,7 +13839,7 @@ checksum = "5c89e72a01ed4c579669add59014b9a524d609c0c88c6a585ce37485879f6ffb"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
  "test-case-core",
 ]
 
@@ -13862,7 +13862,7 @@ checksum = "be35209fd0781c5401458ab66e4f98accf63553e8fae7425503e92fdd319783b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -13911,7 +13911,7 @@ checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -13922,7 +13922,7 @@ checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -14089,7 +14089,7 @@ checksum = "385a6cb71ab9ab790c5fe8d67f1645e6c450a7ce006a33de03daa956cf70a496"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -14279,7 +14279,7 @@ dependencies = [
  "prettyplease",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -14304,7 +14304,7 @@ dependencies = [
  "prost-build",
  "prost-types",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
  "tempfile",
  "tonic-build",
 ]
@@ -14390,7 +14390,7 @@ checksum = "7490cfa5ec963746568740651ac6781f701c9c5ea257c58e057f3ba8cf69e8da"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -14489,7 +14489,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "04659ddb06c87d233c566112c1c9c5b9e98256d9af50ec3bc9c8327f873a7568"
 dependencies = [
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -14569,7 +14569,7 @@ checksum = "ee6ff59666c9cbaec3533964505d39154dc4e0a56151fdea30a09ed0301f62e2"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
  "termcolor",
 ]
 
@@ -15039,7 +15039,7 @@ dependencies = [
  "bumpalo",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
  "wasm-bindgen-shared",
 ]
 
@@ -15482,7 +15482,7 @@ checksum = "2bbd5b46c938e506ecbce286b6628a02171d56153ba733b6c741fc627ec9579b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -15493,7 +15493,7 @@ checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -15504,7 +15504,7 @@ checksum = "053c4c462dc91d3b1504c6fe5a726dd15e216ba718e84a0e46a88fbe5ded3515"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -15515,7 +15515,7 @@ checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -15915,7 +15915,7 @@ dependencies = [
  "heck",
  "indexmap 2.14.0",
  "prettyplease",
- "syn 2.0.117",
+ "syn 2.0.119",
  "wasm-metadata",
  "wit-bindgen-core",
  "wit-component",
@@ -15931,7 +15931,7 @@ dependencies = [
  "prettyplease",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
  "wit-bindgen-core",
  "wit-bindgen-rust",
 ]
@@ -16113,7 +16113,7 @@ checksum = "de844c262c8848816172cef550288e7dc6c7b7814b4ee56b3e1553f275f1858e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
  "synstructure",
 ]
 
@@ -16164,7 +16164,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
  "zvariant_utils",
 ]
 
@@ -16196,7 +16196,7 @@ checksum = "1328722bbf2115db7e19d69ebcc15e795719e2d66b60827c6a69a117365e37a0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -16216,7 +16216,7 @@ checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
  "synstructure",
 ]
 
@@ -16237,7 +16237,7 @@ checksum = "85a5b4158499876c763cb03bc4e49185d3cccbabb15b33c627f7884f43db852e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -16272,7 +16272,7 @@ checksum = "625dc425cab0dca6dc3c3319506e6593dcb08a9f387ea3b284dbd52a92c40555"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -16428,7 +16428,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
  "zvariant_utils",
 ]
 
@@ -16440,5 +16440,5 @@ checksum = "c51bcff7cc3dbb5055396bcf774748c3dab426b4b8659046963523cee4808340"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 2.0.119",
 ]
diff --git a/codex-rs/codex-experimental-api-macros/Cargo.toml b/codex-rs/codex-experimental-api-macros/Cargo.toml
index 2e148a21d7..d9fa14b3ed 100644
--- a/codex-rs/codex-experimental-api-macros/Cargo.toml
+++ b/codex-rs/codex-experimental-api-macros/Cargo.toml
@@ -12,7 +12,7 @@ doctest = false
 [dependencies]
 proc-macro2 = "1"
 quote = "1"
-syn = { version = "2", features = ["full", "extra-traits"] }
+syn = { version = "3", features = ["full", "extra-traits"] }
 
 [lints]
 workspace = true