diff --git a/packages/google-cloud-bigquery-connection/noxfile.py b/packages/google-cloud-bigquery-connection/noxfile.py
index e578b4ab7c4e..18dc5281da04 100644
--- a/packages/google-cloud-bigquery-connection/noxfile.py
+++ b/packages/google-cloud-bigquery-connection/noxfile.py
@@ -28,7 +28,7 @@
 
 DEFAULT_PYTHON_VERSION = "3.8"
 SYSTEM_TEST_PYTHON_VERSIONS = ["3.8"]
-UNIT_TEST_PYTHON_VERSIONS = ["3.6", "3.7", "3.8"]
+UNIT_TEST_PYTHON_VERSIONS = ["3.6", "3.7", "3.8", "3.9"]
 
 
 @nox.session(python=DEFAULT_PYTHON_VERSION)
diff --git a/packages/google-cloud-bigquery-connection/synth.metadata b/packages/google-cloud-bigquery-connection/synth.metadata
index 681058c7e1a0..6639dec86fb0 100644
--- a/packages/google-cloud-bigquery-connection/synth.metadata
+++ b/packages/google-cloud-bigquery-connection/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/python-bigquery-connection.git",
-        "sha": "64eec3189a3261691acbc0726504376b4ea90255"
+        "sha": "ae9541725aa6669dfa22cc7c4c9310dbe2a2764d"
       }
     },
     {