diff --git a/samples/geography/requirements.txt b/samples/geography/requirements.txt
index 8fb578018..a4b4ed692 100644
--- a/samples/geography/requirements.txt
+++ b/samples/geography/requirements.txt
@@ -18,7 +18,7 @@ google-cloud-core==2.0.0
 google-crc32c==1.1.2
 google-resumable-media==2.0.2
 googleapis-common-protos==1.53.0
-grpcio==1.39.0
+grpcio==1.40.0
 idna==3.2
 importlib-metadata==4.8.1
 libcst==0.3.20
diff --git a/samples/snippets/requirements.txt b/samples/snippets/requirements.txt
index e096af157..f575e41b1 100644
--- a/samples/snippets/requirements.txt
+++ b/samples/snippets/requirements.txt
@@ -1,7 +1,7 @@
 google-cloud-bigquery==2.26.0
 google-cloud-bigquery-storage==2.7.0
 google-auth-oauthlib==0.4.6
-grpcio==1.39.0
+grpcio==1.40.0
 ipython==7.16.1; python_version < '3.7'
 ipython==7.17.0; python_version >= '3.7'
 matplotlib==3.3.4; python_version < '3.7'