diff --git a/backend/requirements.txt b/backend/requirements.txt
index b1e1520..70917bd 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -12,3 +12,4 @@ celery>=5.3.6
 redis>=5.0.1
 httpx>=0.26.0
 curl_cffi>=0.13.0,<0.14.0  # For yt-dlp browser impersonation (yt-dlp only supports <0.14)
+Pillow>=10.2.0  # For thumbnail generation