diff --git a/app/Http/Controllers/Auth/RegisterController.php b/app/Http/Controllers/Auth/RegisterController.php
index ebc31b21d..53fabce55 100644
--- a/app/Http/Controllers/Auth/RegisterController.php
+++ b/app/Http/Controllers/Auth/RegisterController.php
@@ -79,7 +79,7 @@ class RegisterController extends Controller
         $role = Role::query()->where('id', '=', $data['roles_id'])->first();
 
         if ($role !== null) {
-            $user->assignRole($role->name);
+            $user->syncRoles([$role->name]);
             if ($user->can('view console')) {
                 $user->givePermissionTo('view console');
             }
diff --git a/app/Models/User.php b/app/Models/User.php
index da2bdcea4..6b1dbbc89 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -396,7 +396,7 @@ class User extends Authenticatable
         $roleName = $roleQuery->name;
 
         $user = self::find($uid);
-        $user->assignRole($roleName);
+        $user->syncRoles([$roleName]);
 
         return self::find($uid)->update(['roles_id' => $role]);
     }
@@ -436,7 +436,7 @@ class User extends Authenticatable
         }
         foreach (self::query()->whereDate('rolechangedate', '<', $now)->get() as $expired) {
             $expired->update(['roles_id' => self::ROLE_USER, 'rolechangedate' => null]);
-            $expired->syncRoles('User');
+            $expired->syncRoles(['User']);
             SendAccountExpiredEmail::dispatch($expired)->onQueue('emails');
         }
     }
diff --git a/app/Observers/UserServiceObserver.php b/app/Observers/UserServiceObserver.php
index fdfcb4088..46f3e2d11 100644
--- a/app/Observers/UserServiceObserver.php
+++ b/app/Observers/UserServiceObserver.php
@@ -28,7 +28,7 @@ class UserServiceObserver
         $roleData = Role::query()->where('id', $user->roles_id);
         $rateLimit = $roleData->value('rate_limit');
         $roleName = $roleData->value('name');
-        $user->assignRole($roleName);
+        $user->syncRoles([$roleName]);
         $user->update(
             [
                 'api_token' => md5(Password::getRepository()->createNewToken()),
diff --git a/misc/run_me_once/updateUserRoles.php b/misc/run_me_once/updateUserRoles.php
index ce5f7a5f4..bfe22f43a 100644
--- a/misc/run_me_once/updateUserRoles.php
+++ b/misc/run_me_once/updateUserRoles.php
@@ -62,10 +62,10 @@ foreach ($oldRoles as $oldRole) {
 
 foreach ($users as $user) {
     if ($user->role !== null && $user->hasRole($user->role->name) === false) {
-        $user->assignRole($user->role->name);
+        $user->syncRoles([$user->role->name]);
         echo 'Role: '.$user->role->name.' assigned to user: '.$user->username.PHP_EOL;
     } elseif ($user->role === null) {
-        $user->assignRole('User');
+        $user->syncRoles(['User']);
     } else {
         echo 'User '.$user->username.' already has the role: '.$user->role->name.PHP_EOL;
     }