diff --git a/.travis.yml b/.travis.yml
index 6151249..89bfda8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,8 @@ sudo: required
 dist: trusty
 language: bash
 env:
-  - DOKKU_VERSION=master
+  - DOKKU_VERSION=v0.6.5
+  - DOKKU_VERSION=v0.5.8
   - DOKKU_VERSION=v0.4.14
   - DOKKU_VERSION=v0.4.0
 before_install: make setup