diff --git a/samples/snippets/requirements.txt b/samples/snippets/requirements.txt
index 659797618..8ec538738 100644
--- a/samples/snippets/requirements.txt
+++ b/samples/snippets/requirements.txt
@@ -1,3 +1,3 @@
-google-cloud-bigquery==0.29.0
+google-cloud-bigquery==0.30.0
 google-auth-oauthlib==0.2.0
-pytz==2017.3
+pytz==2018.3