diff --git a/Cargo.lock b/Cargo.lock
index 1e1b49095..ce39737ae 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2396,6 +2396,17 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "syn"
+version = "3.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8593e8e72159ed2257d083c7a454a85cbf854f37a0966d8d483aff8c8a3ebcee"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "synstructure"
 version = "0.13.1"
@@ -2470,7 +2481,7 @@ version = "0.1.4"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 3.0.6",
 ]
 
 [[package]]
diff --git a/tao-macros/Cargo.toml b/tao-macros/Cargo.toml
index 35b22d0e8..b40f21657 100644
--- a/tao-macros/Cargo.toml
+++ b/tao-macros/Cargo.toml
@@ -19,4 +19,4 @@ default = []
 [dependencies]
 proc-macro2 = "1"
 quote = "1"
-syn = { version = "2", features = ["full"] }
+syn = { version = "3", features = ["full"] }