diff --git a/bigquery-datatransfer/snippets/requirements-test.txt b/bigquery-datatransfer/snippets/requirements-test.txt
index 0096bd1f26f6..d9e6ac347be7 100644
--- a/bigquery-datatransfer/snippets/requirements-test.txt
+++ b/bigquery-datatransfer/snippets/requirements-test.txt
@@ -1,3 +1,3 @@
 google-cloud-bigquery==2.6.0
 pytest==6.2.3
-mock==4.0.2
+mock==4.0.3