diff --git a/.github/config/.tflint.hcl b/.github/config/.tflint.hcl
index 9c1b236d..2f507004 100644
--- a/.github/config/.tflint.hcl
+++ b/.github/config/.tflint.hcl
@@ -5,10 +5,10 @@ config {
 }
 
 plugin "aws" {
-    enabled = true
-    version = "0.25.0"
-    source  = "github.com/terraform-linters/tflint-ruleset-aws"
-    deep_check = false
+  enabled = true
+  version = "0.21.0"
+  source  = "github.com/terraform-linters/tflint-ruleset-aws"
+  deep_check = false
 }
 
 rule "aws_instance_invalid_type" {