diff --git a/cloudwatch.tf b/cloudwatch.tf
index 1ab715b..1ebf142 100644
--- a/cloudwatch.tf
+++ b/cloudwatch.tf
@@ -5,6 +5,7 @@ resource "aws_cloudwatch_log_group" "example1" {
     Environment = "production"
     Application = "serviceA"
   }
+  retention_in_days = 90
 }
 
 resource "aws_cloudwatch_log_group" "example2" {