diff --git a/terraform/main.tf b/terraform/main.tf
index 8ce1977..fe86e1d 100644
--- a/terraform/main.tf
+++ b/terraform/main.tf
@@ -22,7 +22,7 @@ resource "aws_lambda_function" "lambda" {
 
   source_code_hash = filebase64sha256(local.slack_lambda_zip)
 
-  runtime = "nodejs14.x"
+  runtime = "nodejs16.x"
 
   environment {
     variables = merge({