diff --git a/infra/cmd_poweron.tf b/infra/cmd_poweron.tf
index 7b166e6..78e186e 100644
--- a/infra/cmd_poweron.tf
+++ b/infra/cmd_poweron.tf
@@ -10,7 +10,7 @@ module "telegram_bot_cmd_poweron" {
   source = "./modules/handler"
 
   function_name                  = "telegram-bot-cmd-poweron"
-  reserved_concurrent_executions = 3
+  reserved_concurrent_executions = -1
   source_path                    = "${path.root}/../apps/poweron"
 
   sqs_batch_size = 10
diff --git a/infra/main.tf b/infra/main.tf
index eb12aa3..944dc0c 100644
--- a/infra/main.tf
+++ b/infra/main.tf
@@ -43,7 +43,7 @@ module "telegram_bot_handler_mux" {
   source = "./modules/handler"
 
   function_name                  = "telegram-bot-mux"
-  reserved_concurrent_executions = 3
+  reserved_concurrent_executions = -1
   source_path                    = "${path.root}/../apps/mux"
 
   sqs_batch_size = 10
diff --git a/infra/observability.tf b/infra/observability.tf
index d0710fb..4e9c97c 100644
--- a/infra/observability.tf
+++ b/infra/observability.tf
@@ -36,7 +36,7 @@ module "telegram_bot_alerting" {
   source = "./modules/alerting"
 
   name                           = "telegram-bot-alerting"
-  reserved_concurrent_executions = 2
+  reserved_concurrent_executions = -1
   emails                         = var.alerting_emails
   telegram_chat_id               = var.alerting_telegram_chat_id
   ssm_param_telegram_api_token   = module.telegram_bot_api_token.name