diff --git a/main.tf b/main.tf
index 6dd06ff..a967778 100644
--- a/main.tf
+++ b/main.tf
@@ -58,8 +58,9 @@ resource "github_repository" "this" {
   dynamic "pages" {
     for_each = var.pages != null ? { this = var.pages } : {}
     content {
+      build_type = pages.value["build_type"]
       dynamic "source" {
-        for_each = { this = pages.value["source"] }
+        for_each = pages.value["build_type"] == "legacy" ? { this = pages.value["source"] } : {}
         content {
           branch = source.value["branch"]
           path   = source.value["path"]
diff --git a/variables.tf b/variables.tf
index 8142b0f..8d2b465 100644
--- a/variables.tf
+++ b/variables.tf
@@ -224,12 +224,17 @@ variable "collaborators" {
 
 variable "pages" {
   type = object({
-    source = object({
+    build_type = optional(string, "legacy")
+    source = optional(object({
       branch = string
       path   = string
-    })
+    }))
   })
-  default     = null
+  default = null
+  validation {
+    condition     = var.pages == null ? true : var.pages.build_type == "legacy" ? try(var.pages.source.branch, "") != "" && try(var.pages.source.path, "") != "" : true
+    error_message = "When build type is legacy for pages source branch and path are required."
+  }
   description = "The repository's GitHub Pages configuration."
 }