diff --git a/README.md b/README.md
index f30f799..445fb14 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ default VPC in every region for that account.
 | <a name="input_dry_run"></a> [dry\_run](#input\_dry\_run) | Boolean toggle to control the dry-run mode of the lambda function | `bool` | `true` | no |
 | <a name="input_event_bus_name"></a> [event\_bus\_name](#input\_event\_bus\_name) | Event bus name to create event rules in | `string` | `"default"` | no |
 | <a name="input_event_types"></a> [event\_types](#input\_event\_types) | Event types that will trigger this lambda | `set(string)` | <pre>[<br/>  "CreateAccountResult",<br/>  "InviteAccountToOrganization",<br/>  "EnableOptInRegion"<br/>]</pre> | no |
-| <a name="input_lambda"></a> [lambda](#input\_lambda) | Object of optional attributes passed on to the lambda module | <pre>object({<br/>    artifacts_dir            = optional(string, "builds")<br/>    build_in_docker          = optional(bool, false)<br/>    create_package           = optional(bool, true)<br/>    ephemeral_storage_size   = optional(number)<br/>    ignore_source_code_hash  = optional(bool, true)<br/>    local_existing_package   = optional(string)<br/>    memory_size              = optional(number, 128)<br/>    recreate_missing_package = optional(bool, false)<br/>    runtime                  = optional(string, "python3.8")<br/>    s3_bucket                = optional(string)<br/>    s3_existing_package      = optional(map(string))<br/>    s3_prefix                = optional(string)<br/>    store_on_s3              = optional(bool, false)<br/>    timeout                  = optional(number, 300)<br/>  })</pre> | `{}` | no |
+| <a name="input_lambda"></a> [lambda](#input\_lambda) | Object of optional attributes passed on to the lambda module | <pre>object({<br/>    artifacts_dir            = optional(string, "builds")<br/>    build_in_docker          = optional(bool, false)<br/>    create_package           = optional(bool, true)<br/>    ephemeral_storage_size   = optional(number)<br/>    ignore_source_code_hash  = optional(bool, true)<br/>    local_existing_package   = optional(string)<br/>    memory_size              = optional(number, 128)<br/>    recreate_missing_package = optional(bool, false)<br/>    runtime                  = optional(string, "python3.12")<br/>    s3_bucket                = optional(string)<br/>    s3_existing_package      = optional(map(string))<br/>    s3_prefix                = optional(string)<br/>    store_on_s3              = optional(bool, false)<br/>    timeout                  = optional(number, 300)<br/>  })</pre> | `{}` | no |
 | <a name="input_log_level"></a> [log\_level](#input\_log\_level) | Log level for lambda | `string` | `"INFO"` | no |
 | <a name="input_max_workers"></a> [max\_workers](#input\_max\_workers) | Number of worker threads to use to process delete | `number` | `20` | no |
 | <a name="input_tags"></a> [tags](#input\_tags) | Tags for resource | `map(string)` | `{}` | no |
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)