diff --git a/.gitignore b/.gitignore
index 844710c..551504e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,5 @@ build
 downloads
 node_modules
 *.zip
-npm-debug.log
\ No newline at end of file
+npm-debug.log
+yarn.lock
diff --git a/package.json b/package.json
index 15d81e7..874e70d 100644
--- a/package.json
+++ b/package.json
@@ -37,6 +37,7 @@
     "babel-preset-stage-3": "6.17.0",
     "browser-sync": "2.17.3",
     "css-loader": "0.25.0",
+    "graceful-fs": "4.1.9",
     "gulp": "3.9.1",
     "gulp-shell": "0.5.2",
     "gulp-util": "3.0.7",