diff --git a/README.md b/README.md
index 8fcb47b..f8ef5f2 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ It will create the required infrastructure:
 ## Requirements
 
 - [Terraform](https://www.terraform.io/downloads.html) 0.12+
-- [Terraform Provider for cloud.ca](https://github.com/cloud-ca/terraform-provider-cloudca) 1.5+
+- [Terraform Provider for cloud.ca](https://registry.terraform.io/providers/cloud-ca/cloudca/latest) 1.6+
 - [Terraform Provider for RKE](https://github.com/yamamoto-febc/terraform-provider-rke) 0.14.1
 - [terraform-docs](https://github.com/segmentio/terraform-docs) 0.8+
 
@@ -38,7 +38,7 @@ To get the list of available (and the default) version of Kubernetes take a look
 
 | Name | Version |
 |------|---------|
-| cloudca | ~> 1.5 |
+| cloudca | ~> 1.6 |
 | local | n/a |
 | rke | 0.14.1 |
 | template | n/a |
diff --git a/main.tf b/main.tf
index 5defcac..5af1885 100644
--- a/main.tf
+++ b/main.tf
@@ -1,5 +1,13 @@
+terraform {
+  required_providers {
+    cloudca = {
+      source = "cloud-ca/cloudca"
+      version = "1.6.1"
+    }
+  }
+}
+
 provider "cloudca" {
-  version = "~> 1.5"
   api_key = var.api_key
 }