diff --git a/expenses_manager/expenses/views.py b/expenses_manager/expenses/views.py
index dbc0675..fb35a91 100644
--- a/expenses_manager/expenses/views.py
+++ b/expenses_manager/expenses/views.py
@@ -623,6 +623,15 @@ def account_edit(request, pk):
 
 @login_required
 def account_delete(request, pk):
+    """Delete an account via *soft-delete* (sets active=False).
+
+    Unlike expense_delete, tag_delete or income_delete, which delete the
+    record for real, accounts are never physically removed: they are
+    deactivated. Historical expenses and incomes keep their ForeignKey to
+    the account, so balances and charts for past periods remain correct.
+    An inactive account disappears from forms (querysets filtered by
+    active=True) but stays visible and dimmed in the account list.
+    """
     account = get_object_or_404(Account, pk=pk, owner=request.user)
 
     if request.method == "POST":
diff --git a/expenses_manager/requirements.txt b/expenses_manager/requirements.txt
index f46da45..02e2424 100644
Binary files a/expenses_manager/requirements.txt and b/expenses_manager/requirements.txt differ