diff --git a/samples/snippets/requirements.txt b/samples/snippets/requirements.txt
index 4fef7daf..86eb8245 100644
--- a/samples/snippets/requirements.txt
+++ b/samples/snippets/requirements.txt
@@ -1,2 +1,2 @@
 future==0.18.2
-google-cloud-texttospeech==2.5.0
+google-cloud-texttospeech==2.5.1