diff --git a/examples/symfony/composer.json b/examples/symfony/composer.json
index 29da2b8ae1c..86c6c02fbc7 100644
--- a/examples/symfony/composer.json
+++ b/examples/symfony/composer.json
@@ -29,7 +29,7 @@
         "symfony/monolog-bundle": "^3.1.0",
         "symfony/polyfill-apcu": "^1.0",
         "symfony/swiftmailer-bundle": "^2.3.10",
-        "symfony/symfony": "3.3.*",
+        "symfony/symfony": "3.4.*",
         "twig/twig": "^1.0||^2.0",
         "opencensus/opencensus": "dev-master",
         "google/cloud-trace": "^0.3"