diff --git a/versions.tf b/versions.tf
index e44b871..5405779 100644
--- a/versions.tf
+++ b/versions.tf
@@ -13,5 +13,5 @@ terraform {
       source = "hashicorp/random"
     }
   }
-  required_version = "~> 0.13"
+  required_version = "~> 0.15"
 }