diff --git a/playbooks/templates/chaosknoten/configs/zammad/compose.yaml.j2 b/playbooks/templates/chaosknoten/configs/zammad/compose.yaml.j2
index 83efc2c..8d345de 100644
--- a/playbooks/templates/chaosknoten/configs/zammad/compose.yaml.j2
+++ b/playbooks/templates/chaosknoten/configs/zammad/compose.yaml.j2
@@ -1,6 +1,4 @@
 ---
-version: '3.8'
-
 {#
 https://github.com/zammad/zammad-docker-compose
 Docker Compose does not allow defining variables in the compose file (only in .env files), so we use Jinja variables instead
@@ -138,6 +136,8 @@ services:
   zammad-scheduler:
     <<: *zammad-service
     command: ["zammad-scheduler"]
+    volumes:
+      - /ansible_docker_compose/zammad-scheduler-database.yml:/opt/zammad/config/database.yml # workaround for connection pool issue
 
   zammad-websocket:
     <<: *zammad-service