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--- a/metric-providers/org.ossmeter.metricprovider.historic.numberofcommitters/plugin.xml
+++ b/metric-providers/org.ossmeter.metricprovider.historic.numberofcommitters/plugin.xml
@@ -8,4 +8,11 @@
 <extension point="com.googlecode.pongo.runtime.osgi">
     <class name="org.ossmeter.metricprovider.historic.numberofcommitters.model.Committers"/>
   </extension>
+<extension
+      point="org.ossmeter.platform.client.api.pongoviz">
+   <visualiser
+         metricProviderId="org.ossmeter.metricprovider.historic.numberofcommitters.model.CommittersOverTime"
+         pongoVisualiser="org.ossmeter.metricprovider.historic.numberofcommitters.model.CommittersOverTimeViz">
+   </visualiser>
+</extension>
 </plugin>