diff --git a/charts/netris-controller/Chart.yaml b/charts/netris-controller/Chart.yaml
index 97c89d6..888cb78 100644
--- a/charts/netris-controller/Chart.yaml
+++ b/charts/netris-controller/Chart.yaml
@@ -15,13 +15,13 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 2.3.0-alpha.15
+version: 2.3.0-alpha.16
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
-appVersion: 4.3.0-alpha.15
+appVersion: 4.3.0-alpha.16
 home: https://netris.ai
 icon: https://www.netris.ai/wp-content/uploads/2021/01/logo-300.png  # [todo] Change url to permalink
 keywords:
diff --git a/charts/netris-controller/values.yaml b/charts/netris-controller/values.yaml
index f74658c..c732043 100644
--- a/charts/netris-controller/values.yaml
+++ b/charts/netris-controller/values.yaml
@@ -317,6 +317,8 @@ haproxy:
 
 ## Using default values from https://github.com/kiwigrid/helm-charts/tree/master/charts/graphite/values.yaml
 graphite:
+  persistence:
+    size: 50Gi
   configMaps:
     carbon.conf: |-
       [cache]