diff --git a/web/content/_index.pandoc b/web/content/_index.pandoc
index 6621598214dc8e45a6dda6e521a0384648385901..fc81c3569c1e811a39c6ad83580ccab98ddd8a24 100644
--- a/web/content/_index.pandoc
+++ b/web/content/_index.pandoc
@@ -7,7 +7,7 @@ date: 2017-01-13T14:24:23+01:00
 
 hero:
   headline: Open-source multi-physics
-  textline: OpenGeoSys (OGS) is a scientific [open source project](https://github.com/ufz/ogs) for the development of numerical methods for the simulation of thermo-hydro-mechanical-chemical (THMC) processes in porous and fractured media. It has been successfully applied in the fields of contaminant hydrology, water resources and waste management, geotechnical applications, geothermal energy systems and energy storage.
+  textline: OpenGeoSys (OGS) is a scientific [open source project](https://github.com/ufz/ogs) for the development of numerical methods for the simulation of thermo-hydro-mechanical-chemical (THMC) processes in porous and fractured media. Current version is OpenGeoSys-6 which is documented on this page. For information about the discontinued OpenGeoSys-5, see [its dedicated section](/ogs-5). OGS been successfully applied in the fields of contaminant hydrology, water resources and waste management, geotechnical applications, geothermal energy systems and energy storage.
   quicklinks:
     - name: Tools
       anchor: tools