diff --git a/Dockerfiles/snmptraps/README.md b/Dockerfiles/snmptraps/README.md
index e10a1ffdf..f7d0b1a08 100644
--- a/Dockerfiles/snmptraps/README.md
+++ b/Dockerfiles/snmptraps/README.md
@@ -83,6 +83,10 @@ The volume contains log file ``snmptraps.log`` named with received SNMP traps.
The volume allows to add new MIB files. It does not support subdirectories, all MIBs must be placed to ``/var/lib/zabbix/mibs``.
+### ``/var/lib/zabbix/snmptrapd_config``
+
+The volume various persistent configuration files generated by snmptrapd daemon. The volume is required usually only for SNMPv3 traps. Do not modify manually anything stored in the volume.
+
# The image variants
The `zabbix-snmptraps` images come in many flavors, each designed for a specific use case.
diff --git a/Dockerfiles/snmptraps/rhel/README.html b/Dockerfiles/snmptraps/rhel/README.html
index af34ab2cc..f554f95a0 100644
--- a/Dockerfiles/snmptraps/rhel/README.html
+++ b/Dockerfiles/snmptraps/rhel/README.html
@@ -34,6 +34,8 @@
The volume contains log file snmptraps.log named with received SNMP traps.
/var/lib/zabbix/mibs
The volume allows to add new MIB files. It does not support subdirectories, all MIBs must be placed to /var/lib/zabbix/mibs.
+/var/lib/zabbix/snmptrapd_config
+The volume various persistent configuration files generated by snmptrapd daemon. The volume is required usually only for SNMPv3 traps. Do not modify manually anything stored in the volume.
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Documentation
Documentation for this image is stored in the snmptraps/ directory of the zabbix/zabbix-docker GitHub repo. Be sure to familiarize yourself with the repository's README.md file before attempting a pull request.