diff --git a/lambda-slack.tf b/lambda-slack.tf
index 5c4e2a4..2fc78b1 100644
--- a/lambda-slack.tf
+++ b/lambda-slack.tf
@@ -73,7 +73,7 @@ resource "aws_lambda_function" "default" {
 
   source_code_hash = filebase64sha256("${path.module}/slack.zip")
 
-  runtime = "nodejs12.x"
+  runtime = "nodejs16.x"
 
   environment {
     variables = {