diff --git a/Cargo.lock b/Cargo.lock
index 81843d2..1773d0c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -53,7 +53,7 @@ checksum = "9035ad2d096bed7955a320ee7e2230574d28fd3c3a0f186cbea1ff3c7eed5dbb"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -67,7 +67,7 @@ dependencies = [
  "manyhow",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -83,7 +83,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "quote-use",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -274,7 +274,7 @@ checksum = "62d671cc41a825ebabc75757b62d3d168c577f9149b2d49ece1dad1f72119d25"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -295,7 +295,7 @@ checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -425,7 +425,7 @@ checksum = "162ee34ebcb7c64a8abebc059ce0fee27c2262618d7b60ed8faf72fef13c3650"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -695,7 +695,7 @@ checksum = "1ec89e9337638ecdc08744df490b221a7399bf8d164eb52a665454e60e075ad6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -845,7 +845,7 @@ version = "0.2.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 3.0.3",
 ]
 
 [[package]]
@@ -905,7 +905,7 @@ dependencies = [
  "quote",
  "rstml",
  "serde",
- "syn",
+ "syn 2.0.119",
  "walkdir",
 ]
 
@@ -929,7 +929,7 @@ dependencies = [
  "rstml",
  "rustc_version",
  "server_fn_macro",
- "syn",
+ "syn 2.0.119",
  "uuid",
 ]
 
@@ -980,7 +980,7 @@ dependencies = [
  "manyhow-macros",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1079,7 +1079,7 @@ checksum = "6e918e4ff8c4549eb882f14b3a4bc8c8bc93de829416eacf579f1207a8fbf861"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1101,7 +1101,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
 dependencies = [
  "proc-macro2",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1123,7 +1123,7 @@ dependencies = [
  "proc-macro-error-attr2",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1154,7 +1154,7 @@ checksum = "af066a9c399a26e020ada66a034357a868728e72cd426f3adcd35f80d88d88c8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
  "version_check",
  "yansi",
 ]
@@ -1187,7 +1187,7 @@ dependencies = [
  "proc-macro-utils",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1247,7 +1247,7 @@ dependencies = [
  "proc-macro-error2",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1289,7 +1289,7 @@ dependencies = [
  "proc-macro2",
  "proc-macro2-diagnostics",
  "quote",
- "syn",
+ "syn 2.0.119",
  "syn_derive",
  "thiserror 2.0.17",
 ]
@@ -1372,7 +1372,7 @@ checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1452,7 +1452,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustc_version",
- "syn",
+ "syn 2.0.119",
  "xxhash-rust",
 ]
 
@@ -1463,7 +1463,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "63eb08f80db903d3c42f64e60ebb3875e0305be502bdc064ec0a0eab42207f00"
 dependencies = [
  "server_fn_macro",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1518,6 +1518,17 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "syn"
+version = "3.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53e9bae58849f64dfa4f5d5ae372c8341f7305f82a3868709269343628b659a3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "syn_derive"
 version = "0.2.0"
@@ -1527,7 +1538,7 @@ dependencies = [
  "proc-macro-error2",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1538,7 +1549,7 @@ checksum = "c8af7666ab7b6390ab78131fb5b0fce11d6b7a6951602017c35fa82800708971"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1599,7 +1610,7 @@ checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1610,7 +1621,7 @@ checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1680,7 +1691,7 @@ checksum = "076a02dc54dd46795c2e9c8282ed40bcfb1e22747e955de9389a1de28190fb26"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1824,7 +1835,7 @@ dependencies = [
  "bumpalo",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
  "wasm-bindgen-shared",
 ]
 
@@ -1891,7 +1902,7 @@ dependencies = [
  "base16",
  "quote",
  "sha2",
- "syn",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -2037,7 +2048,7 @@ dependencies = [
  "heck",
  "indexmap",
  "prettyplease",
- "syn",
+ "syn 2.0.119",
  "wasm-metadata",
  "wit-bindgen-core",
  "wit-component",
@@ -2053,7 +2064,7 @@ dependencies = [
  "prettyplease",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
  "wit-bindgen-core",
  "wit-bindgen-rust",
 ]
@@ -2139,7 +2150,7 @@ checksum = "2380878cad4ac9aac1e2435f3eb4020e8374b5f13c296cb75b4620ff8e229154"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
  "synstructure",
 ]
 
@@ -2160,7 +2171,7 @@ checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
  "synstructure",
 ]
 
@@ -2183,5 +2194,5 @@ checksum = "6eafa6dfb17584ea3e2bd6e76e0cc15ad7af12b09abdd1ca55961bed9b1063c6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.119",
 ]
diff --git a/packages/leptos-struct-component-macro/Cargo.toml b/packages/leptos-struct-component-macro/Cargo.toml
index 695e674..48fc793 100644
--- a/packages/leptos-struct-component-macro/Cargo.toml
+++ b/packages/leptos-struct-component-macro/Cargo.toml
@@ -14,4 +14,4 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0.89"
 quote = "1.0.37"
-syn = { version = "2.0.89", features = ["extra-traits", "full"] }
+syn = { version = "3.0.0", features = ["extra-traits", "full"] }