diff --git a/variables.tf b/variables.tf
index 773f3b6..b7aad56 100644
--- a/variables.tf
+++ b/variables.tf
@@ -153,8 +153,9 @@ variable "lambda_runtime" {
   validation {
     condition = contains([
       "python3.9",
-      "python3.8",
-      "python3.11"
+      "python3.11",
+      "python3.12",
+      "python3.13"
     ], var.lambda_runtime)
     error_message = "Invalid lambda_runtime provided."
   }