diff --git a/package.json b/package.json
index 80ee1cda4..4ea7eddfa 100644
--- a/package.json
+++ b/package.json
@@ -63,6 +63,7 @@
     "rollup-plugin-commonjs": "5.0.5",
     "rollup-plugin-json": "2.0.2",
     "rollup-plugin-node-resolve": "2.0.0",
+    "shelljs": "~0.7.5",
     "shx": "~0.2.1",
     "sinon": "~1.17.5",
     "sinon-chai": "~2.8.0",