diff --git a/src/Contracts/BaseSyncable.php b/src/Contracts/BaseSyncable.php
new file mode 100644
index 00000000..e9ab18ff
--- /dev/null
+++ b/src/Contracts/BaseSyncable.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stancl\Tenancy\Contracts;
+
+interface BaseSyncable
+{
+    public function getGlobalIdentifierKeyName(): string;
+
+    public function getGlobalIdentifierKey();
+
+    public function getCentralModelName(): string;
+
+    public function getSyncedAttributeNames(): array;
+
+    public function triggerSyncEvent();
+}
diff --git a/src/Contracts/SyncMaster.php b/src/Contracts/SyncMaster.php
index e1b34149..10f78e63 100644
--- a/src/Contracts/SyncMaster.php
+++ b/src/Contracts/SyncMaster.php
@@ -10,9 +10,11 @@ use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 /**
  * @property-read Tenant[]|Collection $tenants
  */
-interface SyncMaster extends Syncable
+interface SyncMaster extends BaseSyncable
 {
     public function tenants(): BelongsToMany;
 
     public function getTenantModelName(): string;
+
+    public function getTenantModelFillable(): array;
 }
diff --git a/src/Contracts/Syncable.php b/src/Contracts/Syncable.php
index 1f6e36e7..056f5d05 100644
--- a/src/Contracts/Syncable.php
+++ b/src/Contracts/Syncable.php
@@ -4,15 +4,7 @@ declare(strict_types=1);
 
 namespace Stancl\Tenancy\Contracts;
 
-interface Syncable
+interface Syncable extends BaseSyncable
 {
-    public function getGlobalIdentifierKeyName(): string;
-
-    public function getGlobalIdentifierKey();
-
-    public function getCentralModelName(): string;
-
-    public function getSyncedAttributeNames(): array;
-
-    public function triggerSyncEvent();
+    public function getCentralModelFillable(): array;
 }
diff --git a/src/Listeners/UpdateSyncedResource.php b/src/Listeners/UpdateSyncedResource.php
index 40d4d644..e5fcea00 100644
--- a/src/Listeners/UpdateSyncedResource.php
+++ b/src/Listeners/UpdateSyncedResource.php
@@ -60,7 +60,7 @@ class UpdateSyncedResource extends QueueableListener
             } else {
                 // If the resource doesn't exist at all in the central DB,we create
                 // the record with all attributes, not just the synced ones.
-                $centralModel = $event->model->getCentralModelName()::create($event->model->getAttributes());
+                $centralModel = $event->model->getCentralModelName()::create($event->model->only($event->model->getCentralModelFillable()));
                 event(new SyncedResourceChangedInForeignDatabase($event->model, null));
             }
         });
@@ -113,7 +113,7 @@ class UpdateSyncedResource extends QueueableListener
                     $localModel->update($syncedAttributes);
                 } else {
                     // When creating, we use all columns, not just the synced ones.
-                    $localModel = $localModelClass::create($eventModel->getAttributes());
+                    $localModel = $localModelClass::create($eventModel->only($eventModel->getTenantModelFillable()));
                 }
 
                 event(new SyncedResourceChangedInForeignDatabase($localModel, $tenant));
diff --git a/tests/ResourceSyncingTest.php b/tests/ResourceSyncingTest.php
index 570448d1..b30c1c4b 100644
--- a/tests/ResourceSyncingTest.php
+++ b/tests/ResourceSyncingTest.php
@@ -603,6 +603,11 @@ class CentralUser extends Model implements SyncMaster
         return ResourceUser::class;
     }
 
+    public function getTenantModelFillable(): array
+    {
+        return (new ResourceUser)->getFillable();
+    }
+
     public function getGlobalIdentifierKey()
     {
         return $this->getAttribute($this->getGlobalIdentifierKeyName());
@@ -651,6 +656,11 @@ class ResourceUser extends Model implements Syncable
         return CentralUser::class;
     }
 
+    public function getCentralModelFillable(): array
+    {
+        return (new CentralUser)->getFillable();
+    }
+
     public function getSyncedAttributeNames(): array
     {
         return [