diff --git a/roles/copr/backend/files/provision/files/mock/site-defaults.cfg b/roles/copr/backend/files/provision/files/mock/site-defaults.cfg
index 51dd2d6486..8f56e62694 100644
--- a/roles/copr/backend/files/provision/files/mock/site-defaults.cfg
+++ b/roles/copr/backend/files/provision/files/mock/site-defaults.cfg
@@ -3,7 +3,10 @@
 config_opts['plugin_conf']['package_state_enable'] = False
 config_opts['plugin_conf']['ccache_enable'] = False
 
-config_opts['plugin_conf']['yum_cache_enable'] = False
+config_opts['plugin_conf']['yum_cache_enable'] = True
+config_opts['plugin_conf']['yum_cache_opts'] = {}
+config_opts['plugin_conf']['yum_cache_opts']['max_age_days'] = 150
+config_opts['plugin_conf']['yum_cache_opts']['max_metadata_age_days'] = 150
 
 config_opts['plugin_conf']['root_cache_enable'] = False
 config_opts['plugin_conf']['root_cache_opts']['age_check'] = False