diff --git a/api/migrations/versions/2025_07_07_1152-b2a0bfccd123_add_node_file_usage.py b/api/migrations/versions/2025_07_07_1152-b2a0bfccd123_add_node_file_usage.py
index 3c630928c4..816392216e 100644
--- a/api/migrations/versions/2025_07_07_1152-b2a0bfccd123_add_node_file_usage.py
+++ b/api/migrations/versions/2025_07_07_1152-b2a0bfccd123_add_node_file_usage.py
@@ -23,7 +23,7 @@ def upgrade() -> None:
         sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True, server_default=sa.text("uuid_generate_v4()")),
         sa.Column("conversation_id", postgresql.UUID(as_uuid=True), nullable=False, index=True),
         sa.Column("message_id", postgresql.UUID(as_uuid=True), nullable=True),
-        sa.Column("node_id", sa.String(length=64), nullable=False, index=True),
+        sa.Column("node_id", sa.String(length=255), nullable=False, index=True),
         sa.Column("upload_file_id", postgresql.UUID(as_uuid=True), nullable=False),
         sa.Column("created_at", sa.DateTime(), server_default=sa.func.now(), nullable=False),
         sa.ForeignKeyConstraint(["conversation_id"], ["conversations.id"],),
diff --git a/api/models/model.py b/api/models/model.py
index 9dbe6e8726..29eaa77583 100644
--- a/api/models/model.py
+++ b/api/models/model.py
@@ -1758,7 +1758,7 @@ class NodeFileUsage(Base):
     id = db.Column(StringUUID, server_default=db.text("uuid_generate_v4()"))
     conversation_id = db.Column(StringUUID, db.ForeignKey("conversations.id"), nullable=False)
     message_id = db.Column(StringUUID, db.ForeignKey("messages.id"), nullable=True)
-    node_id = db.Column(db.String(64), nullable=False)
+    node_id = db.Column(db.String(255), nullable=False)
     upload_file_id = db.Column(StringUUID, db.ForeignKey("upload_files.id"), nullable=False)
     created_at = db.Column(db.DateTime, nullable=False, server_default=func.current_timestamp())