diff --git a/Cargo.lock b/Cargo.lock
index c66ab84..4c9c6ef 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -78,7 +78,7 @@ checksum = "82f6aeea286b8eb4dd3431a1be1b59d290ace00f5bfd8e2a159bc2a05e2c1667"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.2",
+ "syn 3.0.4",
 ]
 
 [[package]]
@@ -243,7 +243,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 3.0.2",
+ "syn 3.0.4",
 ]
 
 [[package]]
@@ -1513,7 +1513,7 @@ checksum = "e7a5d71263a5a7d47b41f6b3f06ba276f10cc18b0931f1799f710578e2309348"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.2",
+ "syn 3.0.4",
 ]
 
 [[package]]
@@ -1641,7 +1641,7 @@ version = "0.1.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.2",
+ "syn 3.0.4",
 ]
 
 [[package]]
@@ -1669,9 +1669,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "3.0.2"
+version = "3.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a207d6d6a2b7fc470b80443726053f18a2481b7e1eee970597051596567987a3"
+checksum = "e6275cddf4610d1775e6d1fe9469b2e77d0f39fd98fb7450901b821e0c53649f"
 dependencies = [
  "proc-macro2",
  "quote",