diff --git a/package-lock.json b/package-lock.json
index d4d4329..58fe286 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2228,11 +2228,6 @@
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
       "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
     },
-    "mellt": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/mellt/-/mellt-1.0.0.tgz",
-      "integrity": "sha1-rmdJnt+TtiPGDdfkjnQoNNFakOs="
-    },
     "memory-fs": {
       "version": "0.4.1",
       "resolved": "https://registry.npmjs.org/memory-fs/-/memory-fs-0.4.1.tgz",
@@ -3687,6 +3682,11 @@
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/yeast/-/yeast-0.1.2.tgz",
       "integrity": "sha1-AI4G2AlDIMNy28L47XagymyKxBk="
+    },
+    "zxcvbn": {
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/zxcvbn/-/zxcvbn-4.4.2.tgz",
+      "integrity": "sha1-KOwXzwl0PtyrBW3dixsGJizHPDA="
     }
   }
 }
diff --git a/package.json b/package.json
index 26c5856..d42c553 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,6 @@
     "express-validator": "^3.2.0",
     "jquery": "^3.2.1",
     "load-google-maps-api": "^1.0.0",
-    "mellt": "^1.0.0",
     "moment": "^2.18.1",
     "mongoose": "^4.11.0",
     "mongoose-unique-validator": "^1.0.5",
@@ -32,7 +31,8 @@
     "slug": "^0.9.1",
     "socket.io": "^2.0.3",
     "socket.io-client": "^2.0.3",
-    "xss": "^0.3.3"
+    "xss": "^0.3.3",
+    "zxcvbn": "^4.4.2"
   },
   "devDependencies": {
     "chai": "^4.0.2",