diff --git a/src/utils/Fetcher.ts b/src/utils/Fetcher.ts
index b8343bb..df0c2bd 100644
--- a/src/utils/Fetcher.ts
+++ b/src/utils/Fetcher.ts
@@ -73,7 +73,10 @@ export class Fetcher {
 
     const responseHeaders = httpCacheItem.policy.responseHeaders();
 
-    if (httpCacheItem.policy.responseHeaders()['cf-mitigated'] === 'challenge') {
+    if (
+      httpCacheItem.policy.responseHeaders()['cf-mitigated'] === 'challenge'
+      || (httpCacheItem.status === 403 && httpCacheItem.policy.responseHeaders()['server'] === 'cloudflare')
+    ) {
       const flareSolverrEndpoint = envGet('FLARESOLVERR_ENDPOINT');
       if (!flareSolverrEndpoint) {
         throw new BlockedError('cloudflare_challenge', httpCacheItem.policy.responseHeaders());