diff --git a/rds-mssql/CHANGELOG.md b/rds-mssql/CHANGELOG.md
new file mode 100644
index 0000000..3714839
--- /dev/null
+++ b/rds-mssql/CHANGELOG.md
@@ -0,0 +1,4 @@
+# v1.4 -- 20200429
+
+* add version.tf
+* add port 5023 to rds-mssql
diff --git a/rds-mssql/main.tf b/rds-mssql/main.tf
index 049c795..80eb6df 100644
--- a/rds-mssql/main.tf
+++ b/rds-mssql/main.tf
@@ -22,6 +22,7 @@ locals {
   name = var.name
   ports = [
     [ 1433, 1433, "tcp" ]
+    [ 5023, 5023, "tcp" ]
   ]
 }
 
diff --git a/rds-mssql/version.tf b/rds-mssql/version.tf
new file mode 100644
index 0000000..82a588a
--- /dev/null
+++ b/rds-mssql/version.tf
@@ -0,0 +1,5 @@
+variable "_module_version" {
+  description = "Module version number"
+  type = string
+  default = "1.4"
+}