diff --git a/models/User.js b/models/User.js
index ef1a3d8683..4660e7fd98 100644
--- a/models/User.js
+++ b/models/User.js
@@ -10,6 +10,7 @@ var userSchema = new mongoose.Schema({
   twitter: { type: String, unique: true, sparse: true },
   google: { type: String, unique: true, sparse: true },
   github: { type: String, unique: true, sparse: true },
+  linkedin: { type: String, unique: true, sparse: true },
   tokens: Array,
 
   profile: {