update charts
diff --git a/charts/k8s-gerrit/.mailmap b/charts/k8s-gerrit/.mailmap
new file mode 100644
index 0000000..cc103a4
--- /dev/null
+++ b/charts/k8s-gerrit/.mailmap
@@ -0,0 +1,2 @@
+Matthias Sohn <matthias.sohn@sap.com> <matthias.sohn@gmail.com>
+Thomas Draebing <thomas.draebing@sap.com>