diff --git a/.travis.yml b/.travis.yml
index effdb13..f45c804 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,3 +4,11 @@ node_js:
   - "7.7.1"
 notifications:
   disabled: true
+before_install:
+- npm install -g npm@5
+- npm install -g greenkeeper-lockfile@1
+before_script: greenkeeper-lockfile-update
+after_script: greenkeeper-lockfile-upload
+env:
+  global:
+  - secure: "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"