diff --git a/backend/config/storage.yml b/backend/config/storage.yml
index c2c2a46..ae4ef9b 100644
--- a/backend/config/storage.yml
+++ b/backend/config/storage.yml
@@ -13,3 +13,4 @@ r2:
   secret_access_key: <%= ENV['R2_SECRET_ACCESS_KEY'] %>
   bucket: <%= ENV['R2_BUCKET'] %>
   region: auto
+  request_checksum_calculation: when_required