diff --git a/backend/migrations/versions/1f5a0f69733a_unify_proposals_to_projects.py b/backend/migrations/versions/1f5a0f69733a_unify_proposals_to_projects.py
index 49ef8d1303..6fdaab35b6 100644
--- a/backend/migrations/versions/1f5a0f69733a_unify_proposals_to_projects.py
+++ b/backend/migrations/versions/1f5a0f69733a_unify_proposals_to_projects.py
@@ -16,15 +16,9 @@
 
 def upgrade():
     with op.batch_alter_table("allocations", schema=None) as batch_op:
-        batch_op.add_column(
-            sa.Column("project_address", sa.String(length=42), nullable=False)
-        )
-        batch_op.drop_column("proposal_address")
+        batch_op.alter_column("proposal_address", new_column_name="project_address")
 
 
 def downgrade():
     with op.batch_alter_table("allocations", schema=None) as batch_op:
-        batch_op.add_column(
-            sa.Column("proposal_address", sa.VARCHAR(length=42), nullable=False)
-        )
-        batch_op.drop_column("project_address")
+        batch_op.alter_column("project_address", new_column_name="proposal_address")
diff --git a/backend/migrations/versions/58536423cfdd_unify_all_individual_rewards_to_vanilla_.py b/backend/migrations/versions/58536423cfdd_unify_all_individual_rewards_to_vanilla_.py
index 6a3495d89f..f211126fdc 100644
--- a/backend/migrations/versions/58536423cfdd_unify_all_individual_rewards_to_vanilla_.py
+++ b/backend/migrations/versions/58536423cfdd_unify_all_individual_rewards_to_vanilla_.py
@@ -16,15 +16,15 @@
 
 def upgrade():
     with op.batch_alter_table("pending_epoch_snapshots", schema=None) as batch_op:
-        batch_op.add_column(
-            sa.Column("vanilla_individual_rewards", sa.String(), nullable=False)
+        batch_op.alter_column(
+            column_name="all_individual_rewards",
+            new_column_name="vanilla_individual_rewards",
         )
-        batch_op.drop_column("all_individual_rewards")
 
 
 def downgrade():
     with op.batch_alter_table("pending_epoch_snapshots", schema=None) as batch_op:
-        batch_op.add_column(
-            sa.Column("all_individual_rewards", sa.VARCHAR(), nullable=False)
+        batch_op.alter_column(
+            column_name="vanilla_individual_rewards",
+            new_column_name="all_individual_rewards",
         )
-        batch_op.drop_column("vanilla_individual_rewards")