diff --git a/Update-recommendations-and-troubleshooting.md b/Update-recommendations-and-troubleshooting.md
index 51c0afa..0dfa7b8 100644
--- a/Update-recommendations-and-troubleshooting.md
+++ b/Update-recommendations-and-troubleshooting.md
@@ -58,6 +58,12 @@ do
 done
 ```
 
+# If your Linux server needs to use a proxy to access the internet
+
+* I take you already configured your Linux system so it can install and update packages via your proxy.
+* [Docker needs to have the proxy configured](https://docs.docker.com/network/proxy/) to be able to pull images
+* EGroupware can also use a proxy to eg. check for an update. Proxy settings are in Setup (https://example.com/egroupware/setup/) upper login under: Edit current configuration > Host information
+
 # Trouble-shooting a not working installation after the update
 
 What to do if you can not access EGroupware after the update: