diff --git a/migrations/versions/0152_kill_service_free_fragments.py b/migrations/versions/0152_kill_service_free_fragments.py
new file mode 100644
index 000000000..038b978da
--- /dev/null
+++ b/migrations/versions/0152_kill_service_free_fragments.py
@@ -0,0 +1,24 @@
+"""
+
+Revision ID: 0152_kill_service_free_fragments
+Revises: 0151_refactor_letter_rates
+Create Date: 2017-12-01 16:49:51.178455
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = '0152_kill_service_free_fragments'
+down_revision = '0151_refactor_letter_rates'
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('services', 'free_sms_fragment_limit')
+    op.drop_column('services_history', 'free_sms_fragment_limit')
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('services_history', sa.Column('free_sms_fragment_limit', sa.BIGINT(), autoincrement=False, nullable=True))
+    op.add_column('services', sa.Column('free_sms_fragment_limit', sa.BIGINT(), autoincrement=False, nullable=True))
diff --git a/requirements.txt b/requirements.txt
index 0c0b2432e..9b28fa639 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ notifications-python-client==4.6.0
 awscli==1.14.4
 awscli-cwlogs>=1.4,<1.5
 
-git+https://github.com/alphagov/notifications-utils.git@23.3.1#egg=notifications-utils==23.3.1
+git+https://github.com/alphagov/notifications-utils.git@23.3.4#egg=notifications-utils==23.3.4
 
 git+https://github.com/alphagov/boto.git@2.43.0-patch3#egg=boto==2.43.0-patch3
 
diff --git a/scripts/fix_migrations.py b/scripts/fix_migrations.py
index 3965ed411..4bf07b7cb 100755
--- a/scripts/fix_migrations.py
+++ b/scripts/fix_migrations.py
@@ -46,8 +46,11 @@ def reorder_revisions(revisions, old_base, new_base):
         file_data = rev_file.read()
 
     file_data = file_data.replace(head.revision, new_revision_id).replace(old_base, new_base)
+    new_filename = head.path.replace(head.revision, new_revision_id)
 
-    with open(head.path.replace(head.revision, new_revision_id), 'w') as rev_file:
+    assert head.path != new_filename, 'Old filename not same as revision id, please rename file before continuing'
+
+    with open(new_filename, 'w') as rev_file:
         rev_file.write(file_data)
 
     print("Removing {}".format(head.path))