diff --git a/Cargo.lock b/Cargo.lock
index 7120e49..f590f8a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -117,7 +117,7 @@ dependencies = [
  "http",
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.3",
 ]
 
 [[package]]
diff --git a/packages/breach-macros/Cargo.toml b/packages/breach-macros/Cargo.toml
index be123fa..cae4c1e 100644
--- a/packages/breach-macros/Cargo.toml
+++ b/packages/breach-macros/Cargo.toml
@@ -23,7 +23,7 @@ utoipa = []
 http.workspace = true
 proc-macro2 = "1.0.103"
 quote = "1.0.42"
-syn = "2.0.110"
+syn = "3.0.0"
 
 [lints]
 workspace = true