diff --git a/diagrams/onprem/monitoring.py b/diagrams/onprem/monitoring.py
index 3da377c1..96bf9566 100644
--- a/diagrams/onprem/monitoring.py
+++ b/diagrams/onprem/monitoring.py
@@ -28,6 +28,10 @@ class Humio(_Monitoring):
     _icon = "humio.png"
 
 
+class Nagios(_Monitoring):
+    _icon = "nagios.png"
+
+
 class Newrelic(_Monitoring):
     _icon = "newrelic.png"
 
diff --git a/resources/onprem/monitoring/nagios.png b/resources/onprem/monitoring/nagios.png
new file mode 100644
index 00000000..a4e40c42
Binary files /dev/null and b/resources/onprem/monitoring/nagios.png differ