diff --git a/translation/samples/snippets/hybrid_glossaries/requirements.txt b/translation/samples/snippets/hybrid_glossaries/requirements.txt
index ed9bbd1eae82..cc7f4187ef1c 100644
--- a/translation/samples/snippets/hybrid_glossaries/requirements.txt
+++ b/translation/samples/snippets/hybrid_glossaries/requirements.txt
@@ -1,3 +1,3 @@
 google-cloud-translate==2.0.1
 google-cloud-vision==1.0.0
-google-cloud-texttospeech==2.0.0
+google-cloud-texttospeech==2.1.0