<p>There is probably a very straightforward answer, but I'm having trouble with it.</p>
<p>Helm is only showing the last 10 revisions if the <code>--max</code> flag value provided is greater than 10. Does helm only store the last 10 revisions?</p>
<pre><code>$ helm history airflow --max 256 -o table
REVISION    UPDATED                     STATUS          CHART           APP VERSION DESCRIPTION
76          Thu Oct  1 12:52:51 2020    pending-upgrade airflow-7.9.0   1.10.12     Preparing upgrade
77          Thu Oct  1 16:01:55 2020    superseded      airflow-7.9.0   1.10.12     Upgrade complete
78          Thu Oct  1 16:02:52 2020    superseded      airflow-7.9.0   1.10.12     Upgrade complete
79          Thu Oct  1 16:32:53 2020    superseded      airflow-7.9.0   1.10.12     Upgrade complete
80          Thu Oct  1 16:52:51 2020    superseded      airflow-7.9.0   1.10.12     Upgrade complete
81          Fri Oct  2 11:06:38 2020    superseded      airflow-7.9.0   1.10.12     Upgrade complete
82          Fri Oct  2 11:08:56 2020    superseded      airflow-7.9.0   1.10.12     Upgrade complete
83          Fri Oct  2 11:16:41 2020    superseded      airflow-7.9.0   1.10.12     Upgrade complete
84          Fri Oct  2 11:25:19 2020    superseded      airflow-7.9.0   1.10.12     Upgrade complete
85          Fri Oct  2 12:07:29 2020    deployed        airflow-7.9.0   1.10.12     Upgrade complete
</code></pre>

<p>The default saved history len is 10 (starting Helm3). The flag is only available in <code>helm upgrade</code> (dunno why they didn't add to <code>install</code> too):</p>
<pre><code>$ helm upgrade --help  | grep history-max
      --history-max int              limit the maximum number of revisions saved per release. Use 0 for no limit (default 10)
</code></pre>
