diff --git a/README.md b/README.md
index 2b36356..47c54e1 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
 
 ![Alt Text](https://github.com/lucky-sideburn/KubeInvaders/blob/master/images/webui.png)
 
+[Video HowTo of version v1.9](https://www.youtube.com/watch?v=wD7ngPlNEjY)
+
 # Table of Contents
 
 1. [Description](#Description)
@@ -33,6 +35,9 @@ helm install kubeinvaders --set-string target_namespace="namespace1\,namespace2"
 
 ## Usage
 
+### Watch YouTube How To
+[Video How To of version v1.9](https://www.youtube.com/watch?v=wD7ngPlNEjY)
+
 ### Show Special Keys
 Press 'h' or select 'Show Special Keys' from the menu.
 
@@ -130,15 +135,16 @@ Please reach out for news, bugs, feature requests, and other issues via:
 
 ## Community blogs and videos
 - Kubernetes.io blog: [KubeInvaders - Gamified Chaos Engineering Tool for Kubernetes](https://kubernetes.io/blog/2020/01/22/kubeinvaders-gamified-chaos-engineering-tool-for-kubernetes/)
-- Vasily Marmer:[Open Source solutions for chaos engineering in Kubernetes](https://blog.flant.com/chaos-engineering-in-kubernetes-open-source-tools/)
-- Mathias Persson: [KubeInvaders - gamified chaos engineering](https://www.reeinvent.com/blog/kubeinvaders)
+- DevNation RedHat Developer: [Twitter](https://twitter.com/sebi2706/status/1316681264179613707)
+- Flant:[Open Source solutions for chaos engineering in Kubernetes](https://blog.flant.com/chaos-engineering-in-kubernetes-open-source-tools/)
+- Reeinvent: [KubeInvaders - gamified chaos engineering](https://www.reeinvent.com/blog/kubeinvaders)
 - Adrian Goins: [K8s Chaos Engineering with KubeInvaders](https://www.youtube.com/watch?v=bxT-eJCkqP8)
 - dbafromthecold: [Chaos engineering for SQL Server running on AKS using KubeInvaders](https://dbafromthecold.com/2019/07/03/chaos-engineering-for-sql-server-running-on-aks-using-kubeinvaders/)
-- Paul Klinker: [Gamification of Kubernetes Chaos Testing](https://pklinker.medium.com/gamification-of-kubernetes-chaos-testing-bd2f7a7b6037)
+- Pklinker: [Gamification of Kubernetes Chaos Testing](https://pklinker.medium.com/gamification-of-kubernetes-chaos-testing-bd2f7a7b6037)
 - Openshift Commons Briefings: [OpenShift Commons Briefing KubeInvaders: Chaos Engineering Tool for Kubernetes](https://www.youtube.com/watch?v=3OOXOCTAYF0&t=4s)
 - Devoptribe.it: [In an awesome-kubernetes](https://devopstribe.it/archives/3254)
 - William Lam: [Interesting Kubernetes application demos](https://williamlam.com/2020/06/interesting-kubernetes-application-demos.html)
 
 ## License
 
-KubeInvaders is licensed under the Apache License, Version 2.0. See [LICENSE](./LICENSE) for the full license text.
\ No newline at end of file
+KubeInvaders is licensed under the Apache License, Version 2.0. See [LICENSE](./LICENSE) for the full license text.
diff --git a/helm-charts/kubeinvaders/README.md b/helm-charts/kubeinvaders/README.md
index d8c81d6..cf43a33 100644
--- a/helm-charts/kubeinvaders/README.md
+++ b/helm-charts/kubeinvaders/README.md
@@ -19,3 +19,4 @@ helm install kubeinvaders --set-string target_namespace="namespace1\,namespace2"
 | image.tag           | Specify tag of KubeInvaders to deploy  |
 | ingress.hostName    | URL used for ingress                   |
 | target_namespace    | namespaces to take under control       |
+| extraEnv            | Extra environment variables for pod    |
diff --git a/helm-charts/kubeinvaders/templates/deployment.yaml b/helm-charts/kubeinvaders/templates/deployment.yaml
index 9801c13..7247552 100644
--- a/helm-charts/kubeinvaders/templates/deployment.yaml
+++ b/helm-charts/kubeinvaders/templates/deployment.yaml
@@ -22,15 +22,18 @@ spec:
       serviceAccountName: kubeinvaders
       containers:
         - env:
-          {{ if .Values.ingress.enabled }}
+          {{- if .Values.ingress.enabled }}
           - name: ENDPOINT
             value: {{ required ".Values.ingress.hostName is required if Ingress are enabled" .Values.ingress.hostName }}
-          {{ else }}
+          {{- else }}
           - name: ENDPOINT
             value: {{ required ".Values.route_host is required if Ingress are disabled" .Values.route_host }}
-          {{ end }}
+          {{- end }}
           - name: NAMESPACE
             value: {{ .Values.target_namespace }}
+          {{- if .Values.extraEnv }}
+{{ toYaml .Values.extraEnv | indent 10 }}
+          {{- end }}
           name: {{ .Chart.Name }}
           image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
           imagePullPolicy: {{ .Values.image.pullPolicy }}
diff --git a/helm-charts/kubeinvaders/values.yaml b/helm-charts/kubeinvaders/values.yaml
index 315fd80..2fbcb0a 100644
--- a/helm-charts/kubeinvaders/values.yaml
+++ b/helm-charts/kubeinvaders/values.yaml
@@ -39,13 +39,23 @@ ingress:
   enabled: true
   annotations:
     nginx.ingress.kubernetes.io/ssl-redirect: "true"
-  hostName: "" 
+  hostName: ""
   tls: {}
 
 # Use route_host only if ingress is disabled
 route_host: ""
 
 legacyIngress: false
+
+extraEnv: []
+# extraEnv:
+#   - name: ALIENPROXIMITY
+#     value: "10"
+#   - name: HITSLIMIT
+#     value: "1"
+#   - name: UPDATETIME
+#     value: "0.5"
+
 resources: {}
 nodeSelector: {}
 tolerations: []