diff --git a/CHANGELOG.md b/CHANGELOG.md
index a2c5f2aadc..6fee995290 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 ### Changed
+* Set `horizontal_pod_autoscaling` to `true` by default. #42
 
 ## [v0.4.0] - 2018-12-19
 ### Added
diff --git a/README.md b/README.md
index e7469b1a36..6f39a4e573 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,7 @@ Then perform the following commands on the root folder:
 | Name | Description | Type | Default | Required |
 |------|-------------|:----:|:-----:|:-----:|
 | description | The description of the cluster | string | `` | no |
-| horizontal_pod_autoscaling | Enable horizontal pod autoscaling addon | string | `false` | no |
+| horizontal_pod_autoscaling | Enable horizontal pod autoscaling addon | string | `true` | no |
 | http_load_balancing | Enable httpload balancer addon | string | `true` | no |
 | ip_masq_link_local | Whether to masquerade traffic to the link-local prefix (169.254.0.0/16). | string | `false` | no |
 | ip_masq_resync_interval | The interval at which the agent attempts to sync its ConfigMap file from the disk. | string | `60s` | no |
diff --git a/variables.tf b/variables.tf
index c0d6a0a977..606557914c 100644
--- a/variables.tf
+++ b/variables.tf
@@ -86,7 +86,7 @@ variable "master_authorized_networks_config" {
 
 variable "horizontal_pod_autoscaling" {
   description = "Enable horizontal pod autoscaling addon"
-  default     = false
+  default     = true
 }
 
 variable "http_load_balancing" {