diff --git a/packages/google-cloud-python-speech/samples/microphone/requirements-test.txt b/packages/google-cloud-python-speech/samples/microphone/requirements-test.txt
index 96863907a42a..b0cf76724270 100644
--- a/packages/google-cloud-python-speech/samples/microphone/requirements-test.txt
+++ b/packages/google-cloud-python-speech/samples/microphone/requirements-test.txt
@@ -1,2 +1,2 @@
 pytest==6.2.4
-mock==4.0.2
+mock==4.0.3