diff --git a/README.md b/README.md
index f0e08c1..758316c 100644
--- a/README.md
+++ b/README.md
@@ -137,14 +137,14 @@ Examples codified under the [`examples`](https://github.com/terraform-aws-module
 
 | Name | Version |
 |------|---------|
-| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0 |
-| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.0 |
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13.1 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 3.72 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
-| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 4.0 |
+| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 3.72 |
 
 ## Modules
 
diff --git a/examples/complete/README.md b/examples/complete/README.md
index 766a4d9..b44867b 100644
--- a/examples/complete/README.md
+++ b/examples/complete/README.md
@@ -24,14 +24,14 @@ Note that this example may create resources which will incur monetary charges on
 
 | Name | Version |
 |------|---------|
-| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0 |
-| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.0 |
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13.1 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 3.72 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
-| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 4.0 |
+| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 3.72 |
 
 ## Modules
 
diff --git a/examples/complete/versions.tf b/examples/complete/versions.tf
index d8dd1a4..22e8d72 100644
--- a/examples/complete/versions.tf
+++ b/examples/complete/versions.tf
@@ -1,10 +1,10 @@
 terraform {
-  required_version = ">= 1.0"
+  required_version = ">= 0.13.1"
 
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = ">= 4.0"
+      version = ">= 3.72"
     }
   }
 }
diff --git a/versions.tf b/versions.tf
index d8dd1a4..22e8d72 100644
--- a/versions.tf
+++ b/versions.tf
@@ -1,10 +1,10 @@
 terraform {
-  required_version = ">= 1.0"
+  required_version = ">= 0.13.1"
 
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = ">= 4.0"
+      version = ">= 3.72"
     }
   }
 }