diff --git a/modules/auth/versions.tf b/modules/auth/versions.tf
index 7c95017d7..7f391af98 100644
--- a/modules/auth/versions.tf
+++ b/modules/auth/versions.tf
@@ -17,6 +17,13 @@
 
 terraform {
   required_version = ">= 0.13.0"
+  required_providers {
+    google = {
+      source = "hashicorp/google"
+      # Avoid v4.49.0 for https://github.com/hashicorp/terraform-provider-google/issues/13507
+      version = ">= 4.47.0, != 4.49.0, < 5.0"
+    }
+  }
 
   provider_meta "google" {
     module_name = "blueprints/terraform/terraform-google-kubernetes-engine:auth/v24.1.0"
diff --git a/test/fixtures/safer_cluster_iap_bastion/version.tf b/test/fixtures/safer_cluster_iap_bastion/version.tf
new file mode 100644
index 000000000..7f193ad3b
--- /dev/null
+++ b/test/fixtures/safer_cluster_iap_bastion/version.tf
@@ -0,0 +1,26 @@
+/**
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+terraform {
+  required_version = ">= 0.13.0"
+  required_providers {
+    google = {
+      source = "hashicorp/google"
+      # Avoid v4.49.0 for https://github.com/hashicorp/terraform-provider-google/issues/13507
+      version = "!= 4.49.0"
+    }
+  }
+}