diff --git a/Cargo.lock b/Cargo.lock
index 81a66b83c..640cf8c6b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -6061,7 +6061,7 @@ version = "0.1.0"
 dependencies = [
  "serde",
  "serde_json",
- "syn 2.0.119",
+ "syn 3.0.3",
  "walkdir",
 ]
 
diff --git a/contrib/dev-tools/analysis/workspace-coupling/Cargo.toml b/contrib/dev-tools/analysis/workspace-coupling/Cargo.toml
index e8d2319ce..51aa250c7 100644
--- a/contrib/dev-tools/analysis/workspace-coupling/Cargo.toml
+++ b/contrib/dev-tools/analysis/workspace-coupling/Cargo.toml
@@ -14,5 +14,5 @@ workspace = true
 [dependencies]
 serde = { version = "1", features = [ "derive" ] }
 serde_json = "1"
-syn = { version = "2", features = [ "full", "visit" ] }
+syn = { version = "3", features = [ "full", "visit" ] }
 walkdir = "2"