diff --git a/Cargo.lock b/Cargo.lock
index d8091792f..0a3e51d46 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -150,7 +150,7 @@ checksum = "f9abbd1bc6865053c427f7198e6af43bfdedc55ab791faed4fbd361d789575ff"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1023,15 +1023,15 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_yaml",
- "syn 2.0.111",
+ "syn 3.0.3",
  "tempfile",
 ]
 
 [[package]]
 name = "syn"
-version = "2.0.111"
+version = "2.0.119"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "390cc9a294ab71bdb1aa2e99d13be9c753cd2d7bd6560c77118597410c4d2e87"
+checksum = "872831b642d1a07999a962a351ed35b955ea2cfc8f3862091e2a240a84f17297"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1156,7 +1156,7 @@ dependencies = [
  "bumpalo",
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn 2.0.119",
  "wasm-bindgen-shared",
 ]
 
@@ -1231,7 +1231,7 @@ checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1242,7 +1242,7 @@ checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1301,7 +1301,7 @@ checksum = "d8a8d209fdf45cf5138cbb5a506f6b52522a25afccc534d1475dad8e31105c6a"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn 2.0.119",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 43d347350..38cbc1d37 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -108,7 +108,7 @@ memchr = "2.7"
 # `proc-macro2/span-locations` gives the audit line numbers to report; edition
 # 2021 means resolver v2, so it does not unify into the proc-macro/build-
 # dependency graph that actually runs the derive macros.
-syn = { version = "2.0", features = ["full", "visit"] }
+syn = { version = "3.0", features = ["full", "visit"] }
 proc-macro2 = { version = "1.0", features = ["span-locations"] }
 
 [[bench]]