diff --git a/data/common/common.yaml b/data/common/common.yaml
--- a/data/common/common.yaml
+++ b/data/common/common.yaml
@@ -1898,6 +1898,7 @@
     auth:
       username: "%{hiera('deposit_basic_auth_swhworker_username')}"
       password: "%{hiera('deposit_basic_auth_swhworker_password')}"
+  default_filename: archive.tar
 
 swh::deploy::checker_deposit::sentry_swh_package: swh.deposit.loader
 swh::deploy::checker_deposit::sentry_environment: "%{alias('swh::deploy::environment')}"