diff --git a/Update-recommendations-and-troubleshooting.md b/Update-recommendations-and-troubleshooting.md
index 94c2294..e3eda8e 100644
--- a/Update-recommendations-and-troubleshooting.md
+++ b/Update-recommendations-and-troubleshooting.md
@@ -23,4 +23,13 @@ rsync -av --delete root@<ip-of-old-server>:/var/lib/egroupware/default/ /var/lib
 chown -R 33:33 /var/lib/egroupware/default
 ```
 5. log into the new EGroupware using the generated ***sysop*** user and go to ***Administration >> Database backup and restore*** and restore the last backup you rsynced to the new server
-6. you can repeat steps 3. to 5. multiple times, until you are ready to use the new system productively
\ No newline at end of file
+6. you can repeat steps 3. to 5. multiple times, until you are ready to use the new system productively
+
+# How to install with PostgreSQL
+While an update of a PostgreSQL instance works similar to MariaDB/MySQL, a new installation does not happen automatic!
+1. Edit /etc/egroupware-docker/docker-compose.yml and add the following to the [environment section](https://github.com/EGroupware/build.opensuse.org/blob/master/server:eGroupWare/egroupware-docker-19.1/egroupware-docker/docker-compose.yml#L44): 
+```
+- EGW_SKIP_INSTALL=true
+```
+2. start the containers as usual with: ```docker-compose up -d```
+3. Go to http://example.org/egroupware/setup/ and do a manual installation