diff --git a/packages/google-cloud-texttospeech/package.json b/packages/google-cloud-texttospeech/package.json
index 57474e8a00a..330cc6704ae 100644
--- a/packages/google-cloud-texttospeech/package.json
+++ b/packages/google-cloud-texttospeech/package.json
@@ -37,7 +37,7 @@
     "predocs-test": "npm run docs"
   },
   "dependencies": {
-    "google-gax": "^1.6.3"
+    "google-gax": "^1.7.5"
   },
   "devDependencies": {
     "codecov": "^3.0.0",