diff --git a/bigquery_magics/bigquery.py b/bigquery_magics/bigquery.py
index 98469e4..742a9ec 100644
--- a/bigquery_magics/bigquery.py
+++ b/bigquery_magics/bigquery.py
@@ -97,10 +97,8 @@
 from google.api_core import client_info
 from google.api_core.exceptions import NotFound
 from google.cloud import bigquery
-from google.cloud.bigquery import _versions_helpers, exceptions
-from google.cloud.bigquery import _versions_helpers, exceptions
+from google.cloud.bigquery import exceptions
 from google.cloud.bigquery.dbapi import _helpers
-from google.cloud.bigquery import _versions_helpers
 
 from bigquery_magics import line_arg_parser as lap
 import bigquery_magics.config
@@ -612,7 +610,9 @@ def _make_bqstorage_client(client, use_bqstorage_api, client_options):
         return None
 
     try:
-        _versions_helpers.BQ_STORAGE_VERSIONS.try_import(raise_if_error=True)
+        bigquery_magics._versions_helpers.BQ_STORAGE_VERSIONS.try_import(
+            raise_if_error=True
+        )
     except exceptions.BigQueryStorageNotFoundError as err:
         customized_error = ImportError(
             "The default BigQuery Storage API client cannot be used, install "
diff --git a/samples/snippets/query_params_scalars.py b/samples/snippets/query_params_scalars.py
index e833ef9..74f665a 100644
--- a/samples/snippets/query_params_scalars.py
+++ b/samples/snippets/query_params_scalars.py
@@ -24,7 +24,7 @@
 
 def query_with_parameters() -> "pandas.DataFrame":
     ip = IPython.get_ipython()
-    ip.extension_manager.load_extension("google.cloud.bigquery")
+    ip.extension_manager.load_extension("bigquery_magics")
 
     sample = """
     # [START bigquery_jupyter_query_params_scalars]
diff --git a/samples/snippets/requirements.txt b/samples/snippets/requirements.txt
index 605d081..9179db0 100644
--- a/samples/snippets/requirements.txt
+++ b/samples/snippets/requirements.txt
@@ -4,6 +4,6 @@ google-cloud-bigquery-storage==2.24.0
 ipython===7.31.1; python_version == '3.7'
 ipython===8.0.1; python_version == '3.8'
 ipython===8.18.1; python_version >= '3.9'
-pandas==1.3.5; python_version == '3.7'
-pandas==2.0.0; python_version == '3.8'
+pandas===1.3.5; python_version == '3.7'
+pandas===2.0.3; python_version == '3.8'
 pandas==2.2.1; python_version >= '3.9'