diff --git a/src/super_archives/management/commands/update_blocks.py b/src/super_archives/management/commands/update_blocks.py
new file mode 100644
index 0000000..a76578a
--- /dev/null
+++ b/src/super_archives/management/commands/update_blocks.py
@@ -0,0 +1,12 @@
+#!/usr/bin/env python
+
+from django.core.management.base import BaseCommand
+from super_archives.models import Message
+
+
+class Command(BaseCommand):
+    help = "Update message blocks (used to hide the reply part messages)"
+
+    def handle(self, *args, **kwargs):
+        for message in Message.objects.iterator():
+            message.update_blocks()
--
libgit2 0.21.2