diff --git a/.github/workflows/blackformatter.yml b/.github/workflows/blackformatter.yml
index 52411d5..0a08681 100644
--- a/.github/workflows/blackformatter.yml
+++ b/.github/workflows/blackformatter.yml
@@ -9,11 +9,13 @@ jobs:
   format-check:
     runs-on: ubuntu-latest
 
+    permissions:
+      contents: write
+      pull-requests: write
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
-        with:
-          persist-credentials: false
 
       - name: Set up Python
         uses: actions/setup-python@v5
diff --git a/teleband/assignments/admin.py b/teleband/assignments/admin.py
index 7e93122..b5a1cc3 100644
--- a/teleband/assignments/admin.py
+++ b/teleband/assignments/admin.py
@@ -87,6 +87,22 @@ class AssignmentInline(admin.TabularInline):
 
 @admin.register(AssignmentGroup)
 class AssignmentGroupAdmin(VersionAdmin):
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     list_display = (
         "id",
         "type",
diff --git a/teleband/submissions/admin.py b/teleband/submissions/admin.py
index 228c2b9..61d415a 100644
--- a/teleband/submissions/admin.py
+++ b/teleband/submissions/admin.py
@@ -18,6 +18,31 @@ class SubmissionAdmin(VersionAdmin):
 @admin.register(SubmissionAttachment)
 class SubmissionAttachmentAdmin(VersionAdmin):
     list_display = ("id", "submission", "file")
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     raw_id_fields = ("submission",)
     # list_filter = ("submission",)