diff --git a/.travis.yml b/.travis.yml
index 6fb38ee5c51..d7e8a408d4e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -43,6 +43,7 @@ before_install:
   && set +x && source secrets.env && set -x
   || true
 - export GOOGLE_CLOUD_PROJECT=java-docs-samples-tests
+- export MAVEN_OPTS='-Xmx768m -XX:MaxPermSize=256m'
 # Skip the install step, since Maven will download the dependencies we need
 # when the test build runs.
 # http://stackoverflow.com/q/31945809/101923