diff --git a/builtin/providers/aws/resource_aws_instance.go b/builtin/providers/aws/resource_aws_instance.go
index 69f4bb3483..10e58ccea4 100644
--- a/builtin/providers/aws/resource_aws_instance.go
+++ b/builtin/providers/aws/resource_aws_instance.go
@@ -92,6 +92,7 @@ func resourceAwsInstance() *schema.Resource {
 				Type:     schema.TypeSet,
 				Optional: true,
 				Computed: true,
+				ForceNew: true,
 				Elem:     &schema.Schema{Type: schema.TypeString},
 				Set: func(v interface{}) int {
 					return hashcode.String(v.(string))