diff --git a/migrations/versions/459520b01f34_.py b/migrations/versions/459520b01f34_.py
index a4e78d1..d8d40fe 100644
--- a/migrations/versions/459520b01f34_.py
+++ b/migrations/versions/459520b01f34_.py
@@ -9,7 +9,6 @@ from alembic import op
 import sqlalchemy as sa
 from sqlalchemy.sql import expression
 
-
 # revision identifiers, used by Alembic.
 revision = '459520b01f34'
 down_revision = '9183e2335b05'
@@ -20,8 +19,12 @@ depends_on = None
 def upgrade():
     # ### commands auto generated by Alembic - please adjust! ###
     with op.batch_alter_table("profile") as batch_op:
-        batch_op.alter_column('availability', new_column_name='availability_text')
-        batch_op.add_column(sa.Column('availability_status', sa.Boolean(), server_default=expression.true(), nullable=False))
+        batch_op.alter_column('availability',
+                              new_column_name='availability_text',
+                              existing_type=sa.String(4000),
+                              existing_server_default="")
+        batch_op.add_column(
+            sa.Column('availability_status', sa.Boolean(), server_default=expression.true(), nullable=False))
         batch_op.add_column(sa.Column('availability_hours_per_week', sa.Integer(), nullable=True))
     # ### end Alembic commands ###
 
@@ -29,7 +32,10 @@ def upgrade():
 def downgrade():
     # ### commands auto generated by Alembic - please adjust! ###
     with op.batch_alter_table("profile") as batch_op:
-        batch_op.alter_column('availability_text', new_column_name='availability')
+        batch_op.alter_column('availability_text',
+                              new_column_name='availability',
+                              existing_type=sa.String(4000),
+                              existing_serve_server_default="")
         batch_op.drop_column('availability_hours_per_week')
         batch_op.drop_column('availability_status')
     # ### end Alembic commands ###