diff --git a/packages/google-cloud-asset/.flake8 b/packages/google-cloud-asset/.flake8
index ed9316381c9c..29227d4cf419 100644
--- a/packages/google-cloud-asset/.flake8
+++ b/packages/google-cloud-asset/.flake8
@@ -26,6 +26,7 @@ exclude =
   *_pb2.py
 
   # Standard linting exemptions.
+  **/.nox/**
   __pycache__,
   .git,
   *.pyc,
diff --git a/packages/google-cloud-asset/synth.metadata b/packages/google-cloud-asset/synth.metadata
index 6b1a5f2a3ffb..eac1ca367c90 100644
--- a/packages/google-cloud-asset/synth.metadata
+++ b/packages/google-cloud-asset/synth.metadata
@@ -19,14 +19,14 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "363fe305e9ce34a6cd53951c6ee5f997094b54ee"
+        "sha": "373861061648b5fe5e0ac4f8a38b32d639ee93e4"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "363fe305e9ce34a6cd53951c6ee5f997094b54ee"
+        "sha": "373861061648b5fe5e0ac4f8a38b32d639ee93e4"
       }
     }
   ],