diff --git a/apps/blockchain-explorer/main.py b/apps/blockchain-explorer/main.py
index 3b418fbb..7bae068b 100755
--- a/apps/blockchain-explorer/main.py
+++ b/apps/blockchain-explorer/main.py
@@ -14,7 +14,7 @@ from typing import Optional, List, Dict, Any
 import os
 
 from fastapi import FastAPI, HTTPException, Query
-from fastapi.responses import JSONResponse
+from fastapi.responses import JSONResponse, HTMLResponse
 from fastapi.middleware.cors import CORSMiddleware
 from pydantic import BaseModel, Field
 import uvicorn