diff --git a/translation/samples/snippets/hybrid_glossaries/requirements.txt b/translation/samples/snippets/hybrid_glossaries/requirements.txt
index cb755cb254d6..755fa8c89e15 100644
--- a/translation/samples/snippets/hybrid_glossaries/requirements.txt
+++ b/translation/samples/snippets/hybrid_glossaries/requirements.txt
@@ -1,3 +1,3 @@
 google-cloud-translate==3.6.1
 google-cloud-vision==2.6.2
-google-cloud-texttospeech==2.7.1
+google-cloud-texttospeech==2.8.0