diff --git a/13-persistentvolume/container-image/requirements.txt b/13-persistentvolume/container-image/requirements.txt
index 7c05f0b..8af2445 100644
--- a/13-persistentvolume/container-image/requirements.txt
+++ b/13-persistentvolume/container-image/requirements.txt
@@ -1 +1 @@
-aiohttp==3.8.1
+aiohttp==3.8.5