diff --git a/Cargo.toml b/Cargo.toml
index b4637aeb02f63..3b4782a20cd67 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -515,7 +515,7 @@ static_assertions = "1.1"
 strsim = "0.11.1"
 subtle = "2.6.1"
 supports-color = "3.0.2"
-syn = { version = "2.0.119", features = ["extra-traits", "full", "parsing", "printing"] }
+syn = { version = "3.0.3", features = ["extra-traits", "full", "parsing", "printing"] }
 sysctl = "0.7.1"
 sysinfo = "0.29.11"
 tabled = "0.20.0"
diff --git a/misc/wasm/Cargo.lock b/misc/wasm/Cargo.lock
index ffc1f738f9a37..29255c5c045c8 100644
--- a/misc/wasm/Cargo.lock
+++ b/misc/wasm/Cargo.lock
@@ -983,7 +983,7 @@ version = "0.1.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.3",
 ]
 
 [[package]]
@@ -1066,7 +1066,7 @@ dependencies = [
  "itertools",
  "mz-ore-build",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.3",
 ]
 
 [[package]]