diff --git a/CHANGELOG.md b/CHANGELOG.md
index 612c11b..b304655 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -410,3 +410,7 @@
   - route53-zone-association
     - terraform-role
       - add for other_role_names
+
+* 2.10.4 -- 2024-10-07
+  - examples/dummy-vpc/vpc0
+    - add default security group (to manage it) to remove ingress/egress rules
diff --git a/common/version.tf b/common/version.tf
index b7e3e3b..dc8e83f 100644
--- a/common/version.tf
+++ b/common/version.tf
@@ -1,5 +1,5 @@
 locals {
-  _module_version = "2.10.3"
+  _module_version = "2.10.4"
   _module_names = {
     "_main_" = "aws-vpc-setup"
 
diff --git a/examples/dummy-vpc/vpc0/vpc.tf b/examples/dummy-vpc/vpc0/vpc.tf
index f71c821..0616e1c 100644
--- a/examples/dummy-vpc/vpc0/vpc.tf
+++ b/examples/dummy-vpc/vpc0/vpc.tf
@@ -8,3 +8,12 @@ resource "aws_vpc" "vpc" {
     { "Name" = "vpc0-dummy" },
   )
 }
+
+resource "aws_default_security_group" "default" {
+  vpc_id = aws_vpc.vpc.id
+
+  tags = merge(
+    local.base_tags,
+    { "Name" = "default-sg-vpc0-dummy" },
+  )
+}