diff --git a/scripts/upgrade b/scripts/upgrade
index b0442ba..5f09a07 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -24,7 +24,8 @@ then
 	ynh_script_progression --message="Upgrading source files..." --weight=5
 
 	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$install_dir"
+	# TODO : find a way to sync stable extensions list to avoid hardcoded extensions folders to keep
+	ynh_setup_source --dest_dir="$install_dir" --full-replace --keep='.env wakka.config.php files/ custom/ private/ themes/ tools/accountactivationbyemail/ tools/advancedsearch/ tools/benevolat/ tools/ferme/ tools/fontautoinstall/ tools/ipblock/ tools/lms/ tools/login-sso/ tools/logincas/ tools/loginldap/ tools/maintenance/ tools/multideletepages/ tools/nextcloudconnector/ tools/publication/ tools/qrcode/ tools/stats/ tools/tabdyn/ tools/twolevels/ tools/webhooks'
 
 	ynh_replace_string --match_string="yeswiki_release' \?=> \?'.*',$" --replace_string="yeswiki_release' => '$(ynh_app_upstream_version)'," --target_file="$install_dir/wakka.config.php"
 fi