diff --git a/.prettierignore b/.prettierignore
index f8183d68c0..22807bea23 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -1,2 +1,3 @@
 *.md
 package.json
+package-lock.json
diff --git a/.travis.yml b/.travis.yml
index 5b36a773b7..fbc09ad821 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: node_js
-node_js: 7
+node_js: 9
 matrix:
   include:
     - os: linux