diff --git a/apps/api/migrations/versions/9e031a0358d1_video_thumbnails.py b/apps/api/migrations/versions/9e031a0358d1_video_thumbnails.py
index 7bede50e..59d89b68 100644
--- a/apps/api/migrations/versions/9e031a0358d1_video_thumbnails.py
+++ b/apps/api/migrations/versions/9e031a0358d1_video_thumbnails.py
@@ -21,8 +21,12 @@ depends_on: Union[str, Sequence[str], None] = None
 
 def upgrade() -> None:
     # ### commands auto generated by Alembic - please adjust! ###
-    op.add_column('course', sa.Column('thumbnail_type', postgresql.ENUM('IMAGE', 'VIDEO', 'BOTH', name='thumbnailtype', create_type=False), nullable=True))
-    op.add_column('course', sa.Column('thumbnail_video', sqlmodel.sql.sqltypes.AutoString(), nullable=True))
+    # Create the ENUM type first
+    thumbnail_type_enum = postgresql.ENUM('IMAGE', 'VIDEO', 'BOTH', name='thumbnail_type')
+    thumbnail_type_enum.create(op.get_bind())
+    
+    op.add_column('course', sa.Column('thumbnail_type', thumbnail_type_enum, nullable=True))
+    op.add_column('course', sa.Column('thumbnail_video', sa.String(), nullable=True))
     # ### end Alembic commands ###
 
 
@@ -30,4 +34,8 @@ def downgrade() -> None:
     # ### commands auto generated by Alembic - please adjust! ###
     op.drop_column('course', 'thumbnail_video')
     op.drop_column('course', 'thumbnail_type')
+    
+    # Drop the ENUM type
+    thumbnail_type_enum = postgresql.ENUM('IMAGE', 'VIDEO', 'BOTH', name='thumbnail_type')
+    thumbnail_type_enum.drop(op.get_bind())
     # ### end Alembic commands ###