Oxidized how to limit amount of config versions

Hello,
I am using Oxidized with LibreNMS and it works amazing well. But Oxidized stores about 300-400 versions of config for each device because I make changes everyday. How can i limit the amount of config versions to for example to 30? I’ am using pretty basic Oxidized config:

username: oxiuser
password: xxxxxxxxxxxxx
model: junos
resolve_dns: true
interval: 43200
use_syslog: false
debug: false
threads: 30
timeout: 100
retries: 3
prompt: !ruby/regexp /^([\[email protected]]+[#>]\s?)$/
rest: 0.0.0.0:8888
next_adds_job: false
vars: {}
groups: {}
models: {}
pid: "/home/oxidized/.config/oxidized/pid"
crash:
  directory: "/home/oxidized/.config/oxidized/crashes"
  hostnames: false
stats:
  history_size: 10
input:
  default: ssh, telnet
  debug: false
  ssh:
    secure: false
  ftp:
    passive: true
  utf8_encoded: true
output:
  default: git
  git:
    user: oxidized
    email: [email protected]
    repo: "/home/oxidized/.config/oxidized/configs"
source:
  default: http
  debug: false
  http:
    url: xxxxxxxxxxxxxxxxxxxxxxxxx
    map:
      name: hostname
      model: os
      group: group
    headers:
      X-Auth-Token: xxxxxxxxxxxxxxxxxxxxxxxxx
model_map:
  juniper: junos
  cisco: ios