diff --git a/README.md b/README.md
index 6627b0d..dad5be3 100644
--- a/README.md
+++ b/README.md
@@ -80,6 +80,8 @@ services:
       - CRON_TIME=0 3 * * *
       # Make it small
       - GZIP_LEVEL=9
+      # As of MySQL 8.0.21 this is needed
+      - MYSQLDUMP_OPTS=--no-tablespaces
     restart: unless-stopped
 
 volumes: