diff --git a/scripts/upgrade b/scripts/upgrade
index 378c148..af4a7fd 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -147,31 +147,6 @@ ynh_script_progression --message="Upgrading dependencies..." --weight=1
 ynh_install_app_dependencies $pkg_dependencies
 
 
-#=================================================
-# UPDATE A CONFIG FILE
-#=================================================
-ynh_script_progression --message="Updating a configuration file..." --weight=1
-
-### Same as during install
-###
-### The file will automatically be backed-up if it's found to be manually modified (because
-### ynh_add_config keeps track of the file's checksum)
-
-ynh_add_config --template="some_config_file" --destination="$final_path/some_config_file"
-
-# FIXME: this should be handled by the core in the future
-# You may need to use chmod 600 instead of 400,
-# for example if the app is expected to be able to modify its own config
-chmod 400 "$final_path/some_config_file"
-chown $app:$app "$final_path/some_config_file"
-
-### For more complex cases where you want to replace stuff using regexes,
-### you shoud rely on ynh_replace_string (which is basically a wrapper for sed)
-### When doing so, you also need to manually call ynh_store_file_checksum
-###
-### ynh_replace_string --match_string="match_string" --replace_string="replace_string" --target_file="$final_path/some_config_file"
-### ynh_store_file_checksum --file="$final_path/some_config_file"
-
 #=================================================
 # SETUP SYSTEMD
 #=================================================