add missing dep

package.json

@@ -35,6 +35,7 @@
   "dependencies": {
     "cli": "^0.11.1",
     "homedir": "^0.6.0",
+    "letsencrypt": "^1.1.0",
     "localhost.daplie.com-certificates": "^1.1.2",
     "mkdirp": "^0.5.1"
   }