diff --git a/packages/sqlalchemy-bigquery/.coveragerc b/packages/sqlalchemy-bigquery/.coveragerc
index 73bf56dd1535..7b0d6b3cd7dc 100644
--- a/packages/sqlalchemy-bigquery/.coveragerc
+++ b/packages/sqlalchemy-bigquery/.coveragerc
@@ -22,7 +22,7 @@ omit =
   sqlalchemy_bigquery/requirements.py
 
 [report]
-fail_under = 98
+fail_under = 100
 show_missing = True
 exclude_lines =
     # Re-enable the standard pragma
@@ -37,3 +37,5 @@ omit =
   */core/*.py
   */site-packages/*.py
   sqlalchemy_bigquery/requirements.py
+  tests/*
+  */tests/*
diff --git a/packages/sqlalchemy-bigquery/tests/unit/test_engine.py b/packages/sqlalchemy-bigquery/tests/unit/test_engine.py
index 67265b5ab853..7362ab588425 100644
--- a/packages/sqlalchemy-bigquery/tests/unit/test_engine.py
+++ b/packages/sqlalchemy-bigquery/tests/unit/test_engine.py
@@ -70,3 +70,9 @@ def test_arraysize_querystring_takes_precedence_over_default(faux_conn, metadata
     metadata.create_all(engine)
 
     assert conn.connection.test_data["arraysize"] == arraysize
+
+
+def test_dbapi_deprecated():
+    from sqlalchemy_bigquery.base import BigQueryDialect
+
+    assert BigQueryDialect.dbapi() is BigQueryDialect.import_dbapi()