diff --git a/README.md b/README.md
index d5c2d8b..9d74d49 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,7 @@ The following tables lists the configurable parameters of the `vsts-agent` chart
 | `vstsPool`                        | VSTS agent pool name                  | `kubernetes-vsts-agents`                                  |
 | `vstsAgentName`                   | VSTS agent name                       | `$HOSTNAME`                                               |
 | `vstsWorkspace`                   | VSTS agent workspace                  | `/workspace`                                              |
+| `extraEnv`                   | Extra environment variables on the vsts-agent container                  | `nil`                                              |
 
 ## Configure your VSTS instance
 
diff --git a/templates/vsts-agent.yaml b/templates/vsts-agent.yaml
index 902aef1..bd73901 100644
--- a/templates/vsts-agent.yaml
+++ b/templates/vsts-agent.yaml
@@ -36,7 +36,11 @@ spec:
             value: {{ .vstsAgentName | default "$HOSTNAME" }}
           - name: VSTS_WORK
             value: {{ .vstsWorkspace | default "/workspace" }}
-          {{- end }}
+         {{- end }}
+         {{- range $key, $value :=  .Values.extraEnv }}
+          - name: {{ $key }}
+            value: {{ $value | quote }}
+         {{- end }}
         volumeMounts:
           - name: docker-socket
             mountPath: /var/run/docker.sock
diff --git a/values.yaml b/values.yaml
index 090b55a..4090489 100644
--- a/values.yaml
+++ b/values.yaml
@@ -14,3 +14,5 @@ resources:
     memory: 8Gi
   disk: "50Gi"
   storageclass: "default"
+
+extraEnv: