diff --git a/awx/main/migrations/0123_drop_hg_support.py b/awx/main/migrations/0123_drop_hg_support.py
index 2a0ed1d1fb..089c6bba6f 100644
--- a/awx/main/migrations/0123_drop_hg_support.py
+++ b/awx/main/migrations/0123_drop_hg_support.py
@@ -1,6 +1,5 @@
-# Generated by Django 2.2.16 on 2020-12-01 18:50
-
 from django.db import migrations, models
+from awx.main.migrations._hg_removal import delete_hg_scm
 
 
 class Migration(migrations.Migration):
@@ -10,6 +9,7 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
+        migrations.RunPython(delete_hg_scm),
         migrations.AlterField(
             model_name='project',
             name='scm_type',
diff --git a/awx/main/migrations/_hg_removal.py b/awx/main/migrations/_hg_removal.py
new file mode 100644
index 0000000000..7b9c878198
--- /dev/null
+++ b/awx/main/migrations/_hg_removal.py
@@ -0,0 +1,12 @@
+import logging
+
+logger = logging.getLogger('awx.main.migrations')
+
+
+def delete_hg_scm(apps, schema_editor):
+    set_current_apps(apps)
+    Project = apps.get_model('main', 'Project')
+    ProjectUpdate = apps.get_model('main', 'ProjectUpdate')
+
+    ProjectUpdate.objects.filter(project__scm_type='hg').delete()
+    Project.objects.filter(scm_type='hg').delete()