diff --git a/variables.tf b/variables.tf
index 85786bd..1ee3ba6 100644
--- a/variables.tf
+++ b/variables.tf
@@ -54,7 +54,7 @@ variable "lambda" {
     local_existing_package   = optional(string)
     memory_size              = optional(number, 128)
     recreate_missing_package = optional(bool, false)
-    runtime                  = optional(string, "python3.8")
+    runtime                  = optional(string, "python3.12")
     s3_bucket                = optional(string)
     s3_existing_package      = optional(map(string))
     s3_prefix                = optional(string)