# Pastebin zsoaV3iS
diff --git a/lib/gitter-adapter.js b/lib/gitter-adapter.js
--- a/lib/gitter-adapter.js
+++ b/lib/gitter-adapter.js
@@ -340,10 +340,33 @@ Adapter.prototype.listUsers = function(c


   var getRoomMembers = cache.get(uri, function() {
+    var index = 0;
+    var limit = 50;
+    var users = [];
+    var usersbyid = new Map();
+    var promise = new Promise();
+    function accumulate(moreusers) {
+      moreusers.forEach(function(user) {
+        if (!usersbyid.has(user.id)) {
+          usersbyid.set(user.id, true);
+          users.push(user);
+        }
+      });
+      if (moreusers.length < limit) {
+        promise.resolve(users);
+        users = null;
+        usersbyid = null;
+        promise = null;
+      } else {
+        index += limit - 5;
+        room.users({limit:limit, skip:index})
+        .then(accumulate);
+      }
+    }
     return this.gitterClient.rooms.join(uri)
     .then(function(room) {
-      var members = room.users();
-      return members;
+      room.users().then(accumulate);
+      return promise;
     });
   }.bind(this));