diff --git a/README.md b/README.md
index c0bea21..7a2d96e 100644
--- a/README.md
+++ b/README.md
@@ -109,7 +109,7 @@ borg init --encryption=repokey-blake2 ssh://uXXXXXX@uXXXXXX.your-backup.de:23/ho
 Start a borgmatic shell with the following commands:
 
 ```bash
-docker exec -ti $(docker ps -q -f name=borg-backup) bash
+docker compose -f /svc/volumes/docker-compose/docker-compose.yaml exec -ti borg-backup bash
 export BORG_PASSPHRASE=$(cat $BORG_PASSPHRASE_FILE)
 ```
 
diff --git a/roles/compose/files/docker-compose.yaml b/roles/compose/files/docker-compose.yaml
index 6c5d80c..bc5230d 100644
--- a/roles/compose/files/docker-compose.yaml
+++ b/roles/compose/files/docker-compose.yaml
@@ -98,7 +98,7 @@ services:
 
   # MySQL database for mail
   mysql_mail:
-    image: mysql:5.7
+    image: mysql:8.0
     volumes:
       - mysql_mail_data:/var/lib/mysql
       - mysql_mail_init_db:/docker-entrypoint-initdb.d
@@ -186,7 +186,7 @@ services:
       - mysql_mail
       - dovecot # SASL authentication
       - postfix_milters
-    image: nesono/postfix_for_postfixadmin:2026-03-22
+    image: nesono/postfix_for_postfixadmin:2026-02-16.1
     container_name: postfix
     environment:
       MYHOSTNAME: "smtp.nesono.com"
@@ -624,7 +624,7 @@ services:
 
   # WordPress services
   mysql_wordpress_noerpel:
-    image: mysql:5.7
+    image: mysql:8.0
     volumes:
       - mysql_wordpress_noerpel_data:/var/lib/mysql
     environment: