diff --git a/app/Http/Controllers/HelixRankCheckController.php b/app/Http/Controllers/HelixRankCheckController.php
index 341281e..af5dea2 100644
--- a/app/Http/Controllers/HelixRankCheckController.php
+++ b/app/Http/Controllers/HelixRankCheckController.php
@@ -36,6 +36,27 @@ class HelixRankCheckController extends Controller
             return $e;
         }, $members);
 
+        $mostRecentTimestamp = array_reduce($members, function($c, $e) {
+            $lastSeen = Carbon::parse($e['lastSeen']);
+            if ($lastSeen > $c)
+                return $lastSeen;
+            return $c;
+        }, Carbon::createFromTimestamp(0));
+
+        $demotionTimestamp = $mostRecentTimestamp->subHours(config('chaosapi.helix.demotion_time_hours', 3));
+
+        $members = array_filter($members, function($e) use ($demotionTimestamp) {
+            if ($e['lastSeen'] > $demotionTimestamp) {
+                return true;
+            }
+
+            // User should be removed from our system regarding Helix
+            $fcRankedUser = FreeCompanyRankedUser::find($e['lodestoneId']);
+            if ($fcRankedUser !== null)
+                $fcRankedUser->delete();
+            return false;
+        });
+
         return [
             'success' => true,
             'error' => null,
diff --git a/config/chaosapi.php b/config/chaosapi.php
index 71a088d..d528f1c 100644
--- a/config/chaosapi.php
+++ b/config/chaosapi.php
@@ -10,6 +10,7 @@ return [
             "Recruit" => 0,
             "Initiate" => 14,
             "Member" => 44,
-        ]
+        ],
+        'demotion_time_hours' => 5
     ]
 ];