diff --git a/root_draft_metadata.tf b/root_draft_metadata.tf
index bba1bbb..0bd8ecd 100644
--- a/root_draft_metadata.tf
+++ b/root_draft_metadata.tf
@@ -48,18 +48,11 @@ module "draft_metadata_api_gateway" {
 resource "aws_iam_role" "draft_metadata_api_gateway_execution_role" {
   name               = "TDRMetadataChecksAPIGatewayExecutionRole${title(local.environment)}"
   assume_role_policy = templatefile("./templates/iam_policy/assume_role_policy.json.tpl", { service = "apigateway.amazonaws.com" })
-}
 
-resource "aws_iam_role_policy" "api_gateway_execution_policy" {
-  name = "TDRMetadataChecksAPIGatewayStepFunctionExecutionPolicy${title(local.environment)}"
-  role = aws_iam_role.draft_metadata_api_gateway_execution_role.id
-  policy = templatefile(
-    "./templates/iam_policy/api_gateway_state_machine_policy.json.tpl",
-    {
-      account_id        = data.aws_caller_identity.current.account_id,
-      state_machine_arn = module.draft_metadata_checks.step_function_arn
-    }
-  )
+  inline_policy {
+    name   = "TDRMetadataChecksAPIGatewayStepFunctionExecutionPolicy${title(local.environment)}"
+    policy = templatefile("./templates/iam_policy/api_gateway_state_machine_policy.json.tpl", { account_id = data.aws_caller_identity.current.account_id, state_machine_arn = module.draft_metadata_checks.step_function_arn })
+  }
 }
 
 module "draft_metadata_bucket" {