diff --git a/samples/samples/pg_snippets.py b/samples/samples/pg_snippets.py
index 678cbc4435..c976af5db1 100644
--- a/samples/samples/pg_snippets.py
+++ b/samples/samples/pg_snippets.py
@@ -1417,7 +1417,7 @@ def update_data_with_jsonb(instance_id, database_id):
 
 
 def query_data_with_jsonb_parameter(instance_id, database_id):
-    """Queries sample data using SQL with a JSON parameter."""
+    """Queries sample data using SQL with a JSONB parameter."""
     # [START spanner_postgresql_jsonb_query_parameter]
     # instance_id = "your-spanner-instance"
     # database_id = "your-spanner-db-id"
@@ -1534,6 +1534,18 @@ def query_data_with_jsonb_parameter(instance_id, database_id):
         "create_client_with_query_options",
         help=create_client_with_query_options.__doc__,
     )
+    subparsers.add_parser(
+        "add_jsonb_column",
+        help=add_jsonb_column.__doc__,
+    )
+    subparsers.add_parser(
+        "update_data_with_jsonb",
+        help=update_data_with_jsonb.__doc__,
+    )
+    subparsers.add_parser(
+        "query_data_with_jsonb_parameter",
+        help=query_data_with_jsonb_parameter.__doc__,
+    )
 
     args = parser.parse_args()
 
@@ -1623,3 +1635,9 @@ def query_data_with_jsonb_parameter(instance_id, database_id):
         query_data_with_query_options(args.instance_id, args.database_id)
     elif args.command == "create_client_with_query_options":
         create_client_with_query_options(args.instance_id, args.database_id)
+    elif args.command == "add_jsonb_column":
+        add_jsonb_column(args.instance_id, args.database_id)
+    elif args.command == "update_data_with_jsonb":
+        update_data_with_jsonb(args.instance_id, args.database_id)
+    elif args.command == "query_data_with_jsonb_parameter":
+        query_data_with_jsonb_parameter(args.instance_id, args.database_id)
diff --git a/tests/system/conftest.py b/tests/system/conftest.py
index d687837d56..26404ef346 100644
--- a/tests/system/conftest.py
+++ b/tests/system/conftest.py
@@ -86,7 +86,9 @@ def spanner_client():
         )
     else:
         return spanner_v1.Client(
-            client_options={"api_endpoint": "staging-wrenchworks.sandbox.googleapis.com"}
+            client_options={
+                "api_endpoint": "staging-wrenchworks.sandbox.googleapis.com"
+            }
         )  # use google.auth.default credentials
 
 
diff --git a/tests/system/test_session_api.py b/tests/system/test_session_api.py
index 2b8c8a4819..d91bed938a 100644
--- a/tests/system/test_session_api.py
+++ b/tests/system/test_session_api.py
@@ -2106,7 +2106,10 @@ def test_execute_sql_w_json_bindings(
         [JSON_1, JSON_2],
     )
 
-def test_execute_sql_w_jsonb_bindings(not_emulator, not_google_standard_sql, sessions_database, database_dialect):
+
+def test_execute_sql_w_jsonb_bindings(
+    not_emulator, not_google_standard_sql, sessions_database, database_dialect
+):
     _bind_test_helper(
         sessions_database,
         database_dialect,