diff --git a/CHANGELOG.md b/CHANGELOG.md
index 28034a0..df0b69b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,3 +10,6 @@
 - 1.0.2 -- 2025-08-15
   - pin external TF module versions
   - update README with external module links
+
+- 1.0.3 -- 2025-08-18
+  - update required TF to 1.5.7 (from submodule requirements)
diff --git a/README.md b/README.md
index f8ba495..5c7e6d7 100644
--- a/README.md
+++ b/README.md
@@ -62,14 +62,14 @@ This uses a number of internal and external modules.  Here are references for th
 
 | Name | Version |
 |------|---------|
-| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0.0 |
-| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 5.0 |
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.5.7 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 6.0 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
-| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 5.0 |
+| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 6.0 |
 
 ## Modules
 
diff --git a/version.tf b/version.tf
index fa9adf9..5dd3258 100644
--- a/version.tf
+++ b/version.tf
@@ -1,4 +1,4 @@
 locals {
   _module_name    = "aws-app-ditd-darhts-s3-transfer"
-  _module_version = "1.0.2"
+  _module_version = "1.0.3"
 }
diff --git a/versions.tf b/versions.tf
index 27445c5..8ea8a90 100644
--- a/versions.tf
+++ b/versions.tf
@@ -1,8 +1,9 @@
 terraform {
+  required_version = ">= 1.5.7"
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = ">= 5.0"
+      version = ">= 6.0"
     }
     #     ldap = {
     #       source  = "trevex/ldap"
@@ -29,5 +30,4 @@ terraform {
     #       version = ">= 2.1.0"
     #     }
   }
-  required_version = ">= 1.0.0"
 }