diff --git a/package.json b/package.json
index 3e3722b96..800b9badb 100644
--- a/package.json
+++ b/package.json
@@ -24,10 +24,10 @@
   "dependencies": {
     "array-changes": "3.0.1",
     "array-changes-async": "3.0.1",
-    "detect-indent": "3.0.1",
+    "detect-indent": "5.0.0",
     "diff": "4.0.1",
     "greedy-interval-packer": "1.2.0",
-    "leven": "2.1.0",
+    "leven": "3.1.0",
     "magicpen": "^6.0.2",
     "unexpected-bluebird": "2.9.34-longstack2"
   },
@@ -61,6 +61,7 @@
     "offline-github-changelog": "^1.6.0",
     "prettier": "~1.16.0",
     "rollup": "^1.0.1",
+    "rollup-plugin-buble": "^0.19.6",
     "rollup-plugin-commonjs": "^9.1.0",
     "rollup-plugin-node-globals": "^1.1.0",
     "rollup-plugin-node-resolve": "^4.0.0",
diff --git a/rollup.config.js b/rollup.config.js
index fcb29c6d1..7e035c6eb 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -13,6 +13,12 @@ module.exports = {
   },
   plugins: [
     /* eslint import/no-extraneous-dependencies: ["error", {"devDependencies": true}] */
+    require('rollup-plugin-buble')({
+      include: [
+        'node_modules/leven/**/*.js',
+        'node_modules/detect-indent/**/*.js'
+      ]
+    }),
     require('rollup-plugin-commonjs')(),
     require('rollup-plugin-node-resolve')(),
     require('rollup-plugin-node-globals')(),