diff --git a/indexer/entity/src/block.rs b/indexer/entity/src/block.rs
index 54a092d7..b149fe02 100644
--- a/indexer/entity/src/block.rs
+++ b/indexer/entity/src/block.rs
@@ -12,7 +12,7 @@ pub struct Model {
     pub height: i32,
     pub epoch: i32,
     pub slot: i32,
-    pub payload: Vec<u8>,
+    pub payload: Option<Vec<u8>>,
 }
 
 #[derive(Copy, Clone, Debug, DeriveRelation, EnumIter)]
diff --git a/indexer/migration/src/m20230223_000015_modify_block_table.rs b/indexer/migration/src/m20230223_000015_modify_block_table.rs
index a831ffed..1454685b 100644
--- a/indexer/migration/src/m20230223_000015_modify_block_table.rs
+++ b/indexer/migration/src/m20230223_000015_modify_block_table.rs
@@ -17,7 +17,7 @@ impl MigrationTrait for Migration {
             .alter_table(
                 Table::alter()
                     .table(Entity)
-                    .add_column(ColumnDef::new(Column::Payload).binary().not_null())
+                    .add_column(ColumnDef::new(Column::Payload).binary())
                     .to_owned(),
             )
             .await
diff --git a/indexer/tasks/src/byron/byron_block.rs b/indexer/tasks/src/byron/byron_block.rs
index de83c81c..e79b3cf1 100644
--- a/indexer/tasks/src/byron/byron_block.rs
+++ b/indexer/tasks/src/byron/byron_block.rs
@@ -49,7 +49,7 @@ async fn handle_block(
         height: Set(block.1.number() as i32),
         epoch: Set(block.1.header().as_byron().unwrap().consensus_data.0.epoch as i32),
         slot: Set(block.1.slot() as i32),
-        payload: Set(block_payload),
+        payload: Set(Some(block_payload)),
         ..Default::default()
     };
 
diff --git a/indexer/tasks/src/genesis/genesis_block.rs b/indexer/tasks/src/genesis/genesis_block.rs
index d4f2001e..a0dcd221 100644
--- a/indexer/tasks/src/genesis/genesis_block.rs
+++ b/indexer/tasks/src/genesis/genesis_block.rs
@@ -44,7 +44,7 @@ async fn handle_block(
         height: Set(0),
         epoch: Set(0),
         slot: Set(0),
-        payload: Set(block_payload),
+        payload: Set(Some(block_payload)),
         ..Default::default()
     };
 
diff --git a/indexer/tasks/src/multiera/multiera_block.rs b/indexer/tasks/src/multiera/multiera_block.rs
index 7cd4e502..4acebbad 100644
--- a/indexer/tasks/src/multiera/multiera_block.rs
+++ b/indexer/tasks/src/multiera/multiera_block.rs
@@ -51,7 +51,7 @@ async fn handle_block(
         height: Set(block.1.number() as i32),
         epoch: Set(block.2.epoch.unwrap() as i32),
         slot: Set(block.1.slot() as i32),
-        payload: Set(block_payload),
+        payload: Set(Some(block_payload)),
         ..Default::default()
     };
     block.insert(db_tx).await