diff --git a/composer.json b/composer.json
index d24f9b3..116b40f 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
     "minimum-stability": "stable",
     "require": {
         "google/cloud-logging": "^1.5.0",
-        "google/gax": "^0.34"
+        "google/gax": "^0.35"
     },
     "require-dev": {
         "phpunit/phpunit": "^4.8|^5.0",