diff --git a/.travis.yml b/.travis.yml
index 369ced793..4f9b0002a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,7 @@ env:
   - MONGODB_IMAGE=mongo:3.2
   - MONGODB_IMAGE=mongo:3.4
   - MONGODB_IMAGE=mongo:3.6
+  - MONGODB_IMAGE=mongo:4.0
   - MONGODB_IMAGE=percona/percona-server-mongodb:3.2
   - MONGODB_IMAGE=percona/percona-server-mongodb:3.4
   - MONGODB_IMAGE=percona/percona-server-mongodb:3.6