diff --git a/Dockerfile.builder b/Dockerfile.builder
index d4995a3..2fedae7 100644
--- a/Dockerfile.builder
+++ b/Dockerfile.builder
@@ -1,4 +1,4 @@
-FROM rosalab/rosa2016.1
+FROM rosalab/rosa2019.1
 
 RUN urpmi --auto --auto-update --no-verify-rpm \
  && rm -f /etc/localtime \
diff --git a/config-generator.sh b/config-generator.sh
index ad49dae..c31a443 100755
--- a/config-generator.sh
+++ b/config-generator.sh
@@ -32,7 +32,7 @@ config_opts['urpm_options'] = '$extra_cfg_urpm_options'
 config_opts['root'] = '$platform_name-$platform_arch'
 config_opts['chroot_setup'] = 'basesystem-minimal basesystem-build xz timezone'
 #config_opts['urpm_options'] = '--xml-info=never $extra_cfg_urpm_options'
-config_opts['plugin_conf']['root_cache_enable'] = False
+config_opts['plugin_conf']['root_cache_enable'] = True
 config_opts['plugin_conf']['root_cache_opts']['age_check'] = True
 config_opts['plugin_conf']['root_cache_opts']['max_age_days'] = 1
 config_opts['plugin_conf']['ccache_enable'] = False