diff --git a/.gitignore b/.gitignore
index c12f3a80..c650246c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /node_modules
+/yarn.lock
 /?.js
diff --git a/.travis.yml b/.travis.yml
index 55c74033..ebaf7192 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,6 @@ sudo: false
 language: node_js
 
 node_js:
-  - "4"
   - "6"
   - "8"
   - "10"