diff --git a/compose.yaml b/compose.yaml
index 7eaa8c7..e4401a3 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -376,10 +376,16 @@ services:
       context: ./services/checker
       dockerfile: Dockerfile
     restart: unless-stopped
+    ports:
+      - name: web
+        target: 8000
+        published: 8009
+        host_ip: 0.0.0.0
+        protocol: tcp
     volumes:
       - type: bind
         source: /var/run/docker.sock
-        target: /prometheus
+        target: /var/run/docker.sock
 
   proxy:
     image: docker.io/nginx:1.27-alpine3.21
diff --git a/services/backend/api/v1/task/views.py b/services/backend/api/v1/task/views.py
index f918526..91f7477 100644
--- a/services/backend/api/v1/task/views.py
+++ b/services/backend/api/v1/task/views.py
@@ -155,5 +155,5 @@ def get_submissions_history(request, competition_id: UUID, task_id: UUID):
 def get_task_attachments(request, competition_id: UUID, task_id: UUID):
     task = get_object_or_404(CompetitionTask, id=task_id)
     return status.OK, CompetitionTaskAttachment.objects.filter(
-        competition_id=competition_id, task=task, user=request.auth
-    )
+        task=task
+    ).all()
diff --git a/services/backend/apps/review/apps.py b/services/backend/apps/review/apps.py
index 27080a3..138bf7f 100644
--- a/services/backend/apps/review/apps.py
+++ b/services/backend/apps/review/apps.py
@@ -5,3 +5,6 @@ class CoreConfig(AppConfig):
     name = "apps.review"
     label = "review"
     verbose_name = "Проверка"
+
+    def ready(self):
+        import apps.review.signals
diff --git a/services/backend/apps/review/signals.py b/services/backend/apps/review/signals.py
new file mode 100644
index 0000000..44da6c2
--- /dev/null
+++ b/services/backend/apps/review/signals.py
@@ -0,0 +1,14 @@
+# myapp/signals.py
+from django.db.models.signals import m2m_changed
+from django.dispatch import receiver
+
+from apps.review.models import Review
+from apps.task.models import CompetitionTask, CompetitionTaskSubmission
+
+
+@receiver(m2m_changed, sender=CompetitionTask.reviewers.through)
+def print_reviewers(sender, instance, action, **kwargs):
+    if action in ['post_add', 'post_remove', 'post_clear']:
+        submissions = CompetitionTaskSubmission.objects.filter(task=instance)
+        for submission in submissions:
+            submission.send_on_review()
\ No newline at end of file
diff --git a/services/backend/apps/task/models.py b/services/backend/apps/task/models.py
index 17232b8..dc917ef 100644
--- a/services/backend/apps/task/models.py
+++ b/services/backend/apps/task/models.py
@@ -182,7 +182,7 @@ class CompetitionTaskSubmission(BaseModel):
         ]  # да это медленно работает и чо
 
         for reviewer in reviewers:
-            Review.objects.create(
+            Review.objects.update_or_create(
                 reviewer=reviewer,
                 submission=self,
             )
diff --git a/services/backend/integrations/checker/healthcheck.py b/services/backend/integrations/checker/healthcheck.py
index 492e127..1ab32f5 100644
--- a/services/backend/integrations/checker/healthcheck.py
+++ b/services/backend/integrations/checker/healthcheck.py
@@ -11,7 +11,7 @@ class CheckerHealthCheck(BaseHealthCheckBackend):
     def check_status(self) -> None:
         try:
             response = httpx.get(
-                f"{settings.ANTIFRAUD_ADDRESS}/ping", timeout=1
+                f"{settings.CHECKER_API_ENDPOINT}/ping", timeout=1
             )
             if response.status_code >= status.INTERNAL_SERVER_ERROR:
                 self.add_error("Checker service is unaccessible")