diff --git a/tests/modules/cloudsql_instance/fixture/variables.tf b/tests/modules/cloudsql_instance/fixture/variables.tf
index 3ddabc68f..a3ff8e0fe 100644
--- a/tests/modules/cloudsql_instance/fixture/variables.tf
+++ b/tests/modules/cloudsql_instance/fixture/variables.tf
@@ -28,10 +28,18 @@ variable "backup_configuration" {
   type = object({
     enabled            = bool
     binary_log_enabled = bool
+    start_time         = string
+    location           = string
+    log_retention_days = number
+    retention_count    = number
   })
   default = {
     enabled            = false
     binary_log_enabled = false
+    start_time         = "23:00"
+    location           = "EU"
+    log_retention_days = 7
+    retention_count    = 7
   }
 }