diff --git a/infra/vultr-kubernetes/backend.tf b/infra/vultr-kubernetes/backend.tf
index ae35199..3da706d 100644
--- a/infra/vultr-kubernetes/backend.tf
+++ b/infra/vultr-kubernetes/backend.tf
@@ -19,6 +19,11 @@ terraform {
       source  = "hashicorp/kubernetes"
       version = "2.37.1"
     }
+
+    tls = {
+      source  = "hashicorp/tls"
+      version = "4.1.0"
+    }
   }
 }