diff --git a/examples/managed_node_groups/main.tf b/examples/managed_node_groups/main.tf
index 4c8b3fed6c..b619314756 100644
--- a/examples/managed_node_groups/main.tf
+++ b/examples/managed_node_groups/main.tf
@@ -95,6 +95,9 @@ module "eks" {
           effect = "NO_SCHEDULE"
         }
       ]
+      update_config = {
+        max_unavailable_percentage = 50 # or set `max_unavailable`
+      }
     }
   }
 
diff --git a/modules/node_groups/README.md b/modules/node_groups/README.md
index 4811e1a709..685c6e5533 100644
--- a/modules/node_groups/README.md
+++ b/modules/node_groups/README.md
@@ -40,6 +40,8 @@ The role ARN specified in `var.default_iam_role_arn` will be used by default. In
 | launch\_template_version | The version of the LT to use | string | none |
 | max\_capacity | Max number of workers | number | `var.workers_group_defaults[asg_max_size]` |
 | min\_capacity | Min number of workers | number | `var.workers_group_defaults[asg_min_size]` |
+| update_config.max\_unavailable\_percentage | Max percentage of unavailable nodes during update. (e.g. 25, 50, etc) | number | `null` if `update_config.max_unavailable` is set |
+| update_config.max\_unavailable | Max number of unavailable nodes during update  | number | `null` if `update_config.max_unavailable_percentage` is set |
 | name | Name of the node group. If you don't really need this, we recommend you to use `name_prefix` instead. | string | Will use the autogenerate name prefix |
 | name_prefix | Name prefix of the node group | string | Auto generated |
 | pre_userdata | userdata to pre-append to the default userdata. Require `create_launch_template` to be `true`| string | "" |
diff --git a/modules/node_groups/node_groups.tf b/modules/node_groups/node_groups.tf
index 865f3ae634..134d38345c 100644
--- a/modules/node_groups/node_groups.tf
+++ b/modules/node_groups/node_groups.tf
@@ -69,6 +69,15 @@ resource "aws_eks_node_group" "workers" {
     }
   }
 
+  dynamic "update_config" {
+    for_each = try(each.value.update_config.max_unavailable_percentage > 0, each.value.update_config.max_unavailable > 0, false) ? [true] : []
+
+    content {
+      max_unavailable_percentage = try(each.value.update_config.max_unavailable_percentage, null)
+      max_unavailable            = try(each.value.update_config.max_unavailable, null)
+    }
+  }
+
   timeouts {
     create = lookup(each.value["timeouts"], "create", null)
     update = lookup(each.value["timeouts"], "update", null)