diff --git a/README.md b/README.md
index b08169f3..8da63311 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ See the [functions](https://github.com/terraform-aws-modules/terraform-aws-notif
 
 | Name | Source | Version |
 |------|--------|---------|
-| <a name="module_lambda"></a> [lambda](#module\_lambda) | terraform-aws-modules/lambda/aws | 3.2.0 |
+| <a name="module_lambda"></a> [lambda](#module\_lambda) | terraform-aws-modules/lambda/aws | 6.8.0 |
 
 ## Resources
 
diff --git a/main.tf b/main.tf
index c8587fad..f533456c 100644
--- a/main.tf
+++ b/main.tf
@@ -73,14 +73,14 @@ resource "aws_sns_topic_subscription" "sns_notify_slack" {
 
   topic_arn           = local.sns_topic_arn
   protocol            = "lambda"
-  endpoint            = module.lambda.lambda_function_arn
+  endpoint            = module.lambda.lambda_function_qualified_arn
   filter_policy       = var.subscription_filter_policy
   filter_policy_scope = var.subscription_filter_policy_scope
 }
 
 module "lambda" {
   source  = "terraform-aws-modules/lambda/aws"
-  version = "3.2.0"
+  version = "6.8.0"
 
   create = var.create