diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a6741a..391c2ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -41,6 +41,9 @@
 * 1.3.2 -- 20211222
   - output instance_profile_arn
 
+* 1.3.3 -- 20220106
+  - add version number max for external provier to 1.2 (2.x not compatible with tf 0.12)
+
 ## version 2.x
 
 branch: compat-tf-0.13
@@ -57,3 +60,6 @@ tag: 2.0.1
 
 * 2.0.2 -- 20211222
   - output instance_profile_arn
+
+* 2.1.0 -- 20220106
+  - prep for tf 0.13+
diff --git a/README.md b/README.md
index 0260b97..a8091bb 100644
--- a/README.md
+++ b/README.md
@@ -104,6 +104,7 @@ module "myrole3" {
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 3.66.0 |
+| <a name="requirement_external"></a> [external](#requirement\_external) | >= 2.2.0 |
 | <a name="requirement_ldap"></a> [ldap](#requirement\_ldap) | >= 0.5.4 |
 
 ## Providers
@@ -111,7 +112,7 @@ module "myrole3" {
 | Name | Version |
 |------|---------|
 | <a name="provider_aws"></a> [aws](#provider\_aws) | >= 3.66.0 |
-| <a name="provider_external"></a> [external](#provider\_external) | n/a |
+| <a name="provider_external"></a> [external](#provider\_external) | >= 2.2.0 |
 | <a name="provider_ldap"></a> [ldap](#provider\_ldap) | >= 0.5.4 |
 | <a name="provider_null"></a> [null](#provider\_null) | n/a |
 | <a name="provider_template"></a> [template](#provider\_template) | n/a |
diff --git a/version.tf b/version.tf
index 4bdd4c1..6a00c99 100644
--- a/version.tf
+++ b/version.tf
@@ -1,3 +1,4 @@
 locals {
-  _module_version = "2.0.2"
+  #  _module_version = "1.3.3"
+  _module_version = "2.1.0"
 }
diff --git a/versions.tf b/versions.tf
index c53b56e..f6feb00 100644
--- a/versions.tf
+++ b/versions.tf
@@ -1,3 +1,4 @@
+# tf 0.13+
 terraform {
   required_providers {
     aws = {
@@ -8,6 +9,15 @@ terraform {
       source  = "trevex/ldap"
       version = ">= 0.5.4"
     }
+    external = {
+      source  = "hashicorp/external"
+      version = ">= 2.2.0"
+    }
   }
   required_version = ">= 0.13"
 }
+
+# tf 0.12
+# provider "external" {
+#   version = "~> 1.2"
+# }