diff --git a/src/index.ts b/src/index.ts
index 8dc0684..cce7e1e 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,6 +1,6 @@
 import express, { NextFunction, Request, Response } from 'express';
-import axios from 'axios';
-import axiosRetry from 'axios-retry';
+import axios, { AxiosError } from 'axios';
+import axiosRetry, { isNetworkOrIdempotentRequestError } from 'axios-retry';
 import { setupCache } from 'axios-cache-interceptor';
 import winston from 'winston';
 import {
@@ -30,7 +30,11 @@ const logger = winston.createLogger({
 });
 
 setupCache(axios);
-axiosRetry(axios, { retries: 3, retryDelay: axiosRetry.exponentialDelay });
+axiosRetry(axios, {
+  retries: 3,
+  retryDelay: axiosRetry.exponentialDelay,
+  retryCondition: (error: AxiosError) => isNetworkOrIdempotentRequestError(error) || (error.response?.status ?? 0) > 400,
+});
 
 const fetcher = new Fetcher(axios, logger);