diff --git a/app/package-lock.json b/app/package-lock.json
index 5fd34733..053576c6 100644
--- a/app/package-lock.json
+++ b/app/package-lock.json
@@ -151,9 +151,9 @@
       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
     },
     "commander": {
-      "version": "2.19.0",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.19.0.tgz",
-      "integrity": "sha512-6tvAOO+D6OENvRAh524Dh9jcfKTYDQAqvqezbCW82xj5X0pSrcpxtvRKHLG0yBY6SD7PSDrJaj+0AiOcKVd1Xg=="
+      "version": "2.20.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.0.tgz",
+      "integrity": "sha512-7j2y+40w61zy6YC2iRNpUe/NwhNyoXrYpHMrSunaMG64nRnaf96zO/KMQR4OyN/UnE5KLyEBnKHd4aG3rskjpQ=="
     },
     "complex.js": {
       "version": "2.0.11",
@@ -1452,9 +1452,9 @@
       "integrity": "sha512-TghvYc72wlMGMVMluVo9WRJc0mB8KxxF/gZ4YYFy7V2ZQX9l7rgbPg7vjS9mt6U5HXODVFVI2bOduCzwOMv/lw=="
     },
     "nearley": {
-      "version": "2.16.0",
-      "resolved": "https://registry.npmjs.org/nearley/-/nearley-2.16.0.tgz",
-      "integrity": "sha512-Tr9XD3Vt/EujXbZBv6UAHYoLUSMQAxSsTnm9K3koXzjzNWY195NqALeyrzLZBKzAkL3gl92BcSogqrHjD8QuUg==",
+      "version": "2.18.0",
+      "resolved": "https://registry.npmjs.org/nearley/-/nearley-2.18.0.tgz",
+      "integrity": "sha512-/zQOMCeJcioI0xJtd5RpBiWw2WP7wLe6vq8/3Yu0rEwgus/G/+pViX80oA87JdVgjRt2895mZSv2VfZmy4W1uw==",
       "requires": {
         "commander": "^2.19.0",
         "moo": "^0.4.3",
diff --git a/app/package.json b/app/package.json
index 92e7aa0d..a96c888b 100644
--- a/app/package.json
+++ b/app/package.json
@@ -25,7 +25,7 @@
     "mathjs": "^5.10.3",
     "meteor-node-stubs": "^0.3.3",
     "moo": "^0.5.0",
-    "nearley": "^2.16.0",
+    "nearley": "^2.18.0",
     "qrcode": "^1.4.1",
     "simpl-schema": "^1.5.5",
     "source-map-support": "^0.5.12",