diff --git a/.travis.yml b/.travis.yml
index c9f92a17..6c18bc98 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,6 +29,7 @@ rvm:
   - 2.5
 
 before_install:
+  - gem install bundler
   - mysql -e 'CREATE DATABASE IF NOT EXISTS test CHARACTER SET utf8mb4;'
   - psql -c 'create database test;' -U postgres
   - export WORKSPACE=`pwd`/workspace