diff --git a/modules/datastore/mysql/aws-rds/1.0/variables.tf b/modules/datastore/mysql/aws-rds/1.0/variables.tf
index fbd416539..b756b38fe 100644
--- a/modules/datastore/mysql/aws-rds/1.0/variables.tf
+++ b/modules/datastore/mysql/aws-rds/1.0/variables.tf
@@ -17,12 +17,12 @@ variable "instance" {
         storage_type          = string
         read_replica_count    = number
       })
-      restore_config = object({
+      restore_config = optional(object({
         restore_from_backup           = bool
         source_db_instance_identifier = optional(string)
         restore_master_username       = optional(string)
         restore_master_password       = optional(string)
-      })
+      }), { restore_from_backup = false })
       imports = optional(object({
         import_existing        = optional(bool, false)
         db_instance_identifier = optional(string)
diff --git a/modules/datastore/mysql/flexible_server/1.0/variables.tf b/modules/datastore/mysql/flexible_server/1.0/variables.tf
index 745a86c15..847f98fb8 100644
--- a/modules/datastore/mysql/flexible_server/1.0/variables.tf
+++ b/modules/datastore/mysql/flexible_server/1.0/variables.tf
@@ -18,13 +18,13 @@ variable "instance" {
         storage_tier       = string
         read_replica_count = number
       })
-      restore_config = object({
+      restore_config = optional(object({
         restore_from_backup    = optional(bool)
         source_server_id       = optional(string)
         restore_point_in_time  = optional(string)
         administrator_login    = optional(string)
         administrator_password = optional(string)
-      })
+      }), {})
       imports = optional(object({
         import_existing  = optional(bool, false)
         server_id        = optional(string)
diff --git a/modules/datastore/mysql/gcp-cloudsql/1.0/variables.tf b/modules/datastore/mysql/gcp-cloudsql/1.0/variables.tf
index 72667c05b..35c1d948c 100644
--- a/modules/datastore/mysql/gcp-cloudsql/1.0/variables.tf
+++ b/modules/datastore/mysql/gcp-cloudsql/1.0/variables.tf
@@ -14,12 +14,12 @@ variable "instance" {
         disk_size          = number
         read_replica_count = number
       })
-      restore_config = object({
+      restore_config = optional(object({
         restore_from_backup = bool
         source_instance_id  = optional(string)
         master_username     = optional(string)
         master_password     = optional(string)
-      })
+      }), { restore_from_backup = false })
       imports = optional(object({
         import_existing = optional(bool, false)
         instance_name   = optional(string)
diff --git a/modules/datastore/postgres/aws-rds/1.0/variables.tf b/modules/datastore/postgres/aws-rds/1.0/variables.tf
index b414459cd..527067f8d 100644
--- a/modules/datastore/postgres/aws-rds/1.0/variables.tf
+++ b/modules/datastore/postgres/aws-rds/1.0/variables.tf
@@ -17,12 +17,12 @@ variable "instance" {
       security_config = object({
         deletion_protection = bool
       })
-      restore_config = object({
+      restore_config = optional(object({
         restore_from_backup           = bool
         source_db_instance_identifier = optional(string)
         master_username               = optional(string)
         master_password               = optional(string)
-      })
+      }), { restore_from_backup = false })
       imports = optional(object({
         import_existing        = optional(bool, false)
         db_instance_identifier = optional(string)
diff --git a/modules/datastore/postgres/gcp-cloudsql/1.0/variables.tf b/modules/datastore/postgres/gcp-cloudsql/1.0/variables.tf
index 17e1dc5a4..ece1555d1 100644
--- a/modules/datastore/postgres/gcp-cloudsql/1.0/variables.tf
+++ b/modules/datastore/postgres/gcp-cloudsql/1.0/variables.tf
@@ -14,12 +14,12 @@ variable "instance" {
         disk_size          = number
         read_replica_count = number
       })
-      restore_config = object({
+      restore_config = optional(object({
         restore_from_backup = bool
         source_instance_id  = optional(string)
         master_username     = optional(string)
         master_password     = optional(string)
-      })
+      }), { restore_from_backup = false })
       network_config = optional(object({
         ipv4_enabled = optional(bool, false)
         require_ssl  = optional(bool, true)
diff --git a/modules/datastore/redis/gcp-memorystore/1.0/variables.tf b/modules/datastore/redis/gcp-memorystore/1.0/variables.tf
index 9b0397f74..aaa8c7390 100644
--- a/modules/datastore/redis/gcp-memorystore/1.0/variables.tf
+++ b/modules/datastore/redis/gcp-memorystore/1.0/variables.tf
@@ -15,10 +15,10 @@ variable "instance" {
         memory_size_gb = number
         tier           = string
       })
-      restore_config = object({
+      restore_config = optional(object({
         restore_from_backup = bool
         source_instance_id  = optional(string)
-      })
+      }), { restore_from_backup = false })
       security = object({
         enable_tls = bool
       })