diff --git a/website/docs/installation/docker-compose.md b/website/docs/installation/docker-compose.md
index b5e819aee..60411b951 100644
--- a/website/docs/installation/docker-compose.md
+++ b/website/docs/installation/docker-compose.md
@@ -23,6 +23,8 @@ If this is a fresh authentik install run the following commands to generate a pa
 ```shell
 # You can also use openssl instead: `openssl rand -base64 36`
 sudo apt-get install -y pwgen
+# Because of a PostgreSQL limitation, only passwords up to 99 chars are supported
+# See https://www.postgresql.org/message-id/09512C4F-8CB9-4021-B455-EF4C4F0D55A0@amazon.com
 echo "PG_PASS=$(pwgen 40 1)" >> .env
 echo "AUTHENTIK_SECRET_KEY=$(pwgen 50 1)" >> .env
 # Skip if you don't want to enable error reporting