diff --git a/src/main/resources/org/datadog/jmxfetch/default-jmx-metrics.yaml b/src/main/resources/org/datadog/jmxfetch/default-jmx-metrics.yaml
index 88832443..7d2470d6 100644
--- a/src/main/resources/org/datadog/jmxfetch/default-jmx-metrics.yaml
+++ b/src/main/resources/org/datadog/jmxfetch/default-jmx-metrics.yaml
@@ -87,6 +87,9 @@
       LoadedClassCount:
         alias: jvm.loaded_classes
         metric_type: gauge
+      UnloadedClassCount:
+        alias: jvm.unloaded_classes
+        metric_type: gauge
 
 # Open File Descriptors
 - include: