diff --git a/samples/snippets/v3/api-client/requirements.txt b/samples/snippets/v3/api-client/requirements.txt
index f739af51..572132c4 100644
--- a/samples/snippets/v3/api-client/requirements.txt
+++ b/samples/snippets/v3/api-client/requirements.txt
@@ -1,3 +1,3 @@
 google-api-python-client==1.12.1
-google-auth==1.21.2
+google-auth==1.21.3
 google-auth-httplib2==0.0.4