diff --git a/versions.tf b/versions.tf
index ae7b271..630394f 100644
--- a/versions.tf
+++ b/versions.tf
@@ -2,6 +2,7 @@ terraform {
   required_providers {
     hcloud = {
       source  = "hetznercloud/hcloud"
+      version = ">= 1.0.0, < 2.0.0"
     }
   }
 }