diff --git a/packages/google-cloud-texttospeech/samples/snippets/requirements.txt b/packages/google-cloud-texttospeech/samples/snippets/requirements.txt
index 485e9a4108e2..4fef7dafb5af 100644
--- a/packages/google-cloud-texttospeech/samples/snippets/requirements.txt
+++ b/packages/google-cloud-texttospeech/samples/snippets/requirements.txt
@@ -1,2 +1,2 @@
 future==0.18.2
-google-cloud-texttospeech==2.4.0
+google-cloud-texttospeech==2.5.0