diff --git a/splunk_connect_for_snmp_poller/mongo.py b/splunk_connect_for_snmp_poller/mongo.py
index 89f3a0f..8fd62e9 100644
--- a/splunk_connect_for_snmp_poller/mongo.py
+++ b/splunk_connect_for_snmp_poller/mongo.py
@@ -9,6 +9,13 @@ def __init__(self, mongo_config):
             os.environ["MONGO_SERVICE_SERVICE_HOST"],
             int(os.environ["MONGO_SERVICE_SERVICE_PORT"]),
         )
+        if os.environ.get("MONGO_USER"):
+            self._client.admin.authenticate(
+                os.environ["MONGO_USER"],
+                os.environ["MONGO_PASS"],
+                mechanism="SCRAM-SHA-1",
+            )
+
         self._walked_hosts = self._client[mongo_config["database"]][
             mongo_config["collection"]
         ]