diff --git a/.tflint.hcl b/.tflint.hcl
index c36163d..a8d7c8a 100644
--- a/.tflint.hcl
+++ b/.tflint.hcl
@@ -3,6 +3,7 @@ plugin "aws" {
   enabled = true
   version = "0.42.0"
   source  = "github.com/terraform-linters/tflint-ruleset-aws"
+  signature = "pgp"
 }
 
 config {