diff --git a/charts/argo/templates/workflow-controller-config-map.yaml b/charts/argo/templates/workflow-controller-config-map.yaml
index 2f2faf93..bab361ac 100644
--- a/charts/argo/templates/workflow-controller-config-map.yaml
+++ b/charts/argo/templates/workflow-controller-config-map.yaml
@@ -16,6 +16,7 @@ data:
     {{- end }}
     {{- end }}
     containerRuntimeExecutor: {{ .Values.controller.containerRuntimeExecutor }}
+    parallelism: {{ .Values.controller.parallelism }}
     {{- if or .Values.executor.resources .Values.executor.env .Values.executor.securityContext}}
     executor:
       {{- with .Values.executor.resources }}
diff --git a/charts/argo/values.yaml b/charts/argo/values.yaml
index 1a4c5f28..c0186ce8 100644
--- a/charts/argo/values.yaml
+++ b/charts/argo/values.yaml
@@ -36,6 +36,8 @@ controller:
   image:
     # Overrides .images.tag if defined.
     tag: ""
+  # parallelism dictates how many workflows can be running at the same time
+  parallelism: 10
   # podAnnotations is an optional map of annotations to be applied to the controller Pods
   podAnnotations: {}
   # Optional labels to add to the controller pods