diff --git a/doc/erko_howto_tools.txt b/doc/erko_howto_tools.txt
index 7a09338cec4bb7e6b18a3fc1eaba713b5f8c8b96..73a9ac924eeb15ce0a70e13bf66a8db63009437b 100755
--- a/doc/erko_howto_tools.txt
+++ b/doc/erko_howto_tools.txt
@@ -19,6 +19,7 @@
 * ICT diensten
 * Python
 * Jupyter
+* Graphana
 * Zenodo DOI
 
 
@@ -840,6 +841,14 @@ Works from home in VPN:
 Check of SDPTR op dop369 actief is met:
 > uals -u 10.87.2.36:4840 -p "0:Objects"
 
+
+*******************************************************************************
+* Graphana
+*******************************************************************************
+
+http://dts-lcu.astron.nl:3000/?orgId=1
+
+
 *******************************************************************************
 * Zenodo DOI
 *******************************************************************************