diff --git a/modules/spanner-instance/README.md b/modules/spanner-instance/README.md
index d021b8da8..04bd0bc28 100644
--- a/modules/spanner-instance/README.md
+++ b/modules/spanner-instance/README.md
@@ -168,13 +168,13 @@ module "spanner_instance" {
 
 | name | description | type | required | default |
 |---|---|:---:|:---:|:---:|
-| [instance](variables.tf#L89) | Instance attributes. | <code>object&#40;&#123;&#8230;&#125;&#41;</code> | ✓ |  |
-| [project_id](variables.tf#L134) | Project id. | <code>string</code> | ✓ |  |
+| [instance](variables.tf#L90) | Instance attributes. | <code>object&#40;&#123;&#8230;&#125;&#41;</code> | ✓ |  |
+| [project_id](variables.tf#L137) | Project id. | <code>string</code> | ✓ |  |
 | [databases](variables.tf#L17) | Databases. | <code>map&#40;object&#40;&#123;&#8230;&#125;&#41;&#41;</code> |  | <code>&#123;&#125;</code> |
-| [iam](variables.tf#L63) | IAM bindings in {ROLE => [MEMBERS]} format. | <code>map&#40;list&#40;string&#41;&#41;</code> |  | <code>&#123;&#125;</code> |
-| [iam_bindings](variables.tf#L69) | Authoritative IAM bindings in {KEY => {role = ROLE, members = [], condition = {}}}. Keys are arbitrary. | <code>map&#40;object&#40;&#123;&#8230;&#125;&#41;&#41;</code> |  | <code>&#123;&#125;</code> |
-| [iam_bindings_additive](variables.tf#L79) | Individual additive IAM bindings. Keys are arbitrary. | <code>map&#40;object&#40;&#123;&#8230;&#125;&#41;&#41;</code> |  | <code>&#123;&#125;</code> |
-| [instance_create](variables.tf#L127) | Set to false to manage databases and IAM bindings in an existing instance. | <code>bool</code> |  | <code>true</code> |
+| [iam](variables.tf#L64) | IAM bindings in {ROLE => [MEMBERS]} format. | <code>map&#40;list&#40;string&#41;&#41;</code> |  | <code>&#123;&#125;</code> |
+| [iam_bindings](variables.tf#L70) | Authoritative IAM bindings in {KEY => {role = ROLE, members = [], condition = {}}}. Keys are arbitrary. | <code>map&#40;object&#40;&#123;&#8230;&#125;&#41;&#41;</code> |  | <code>&#123;&#125;</code> |
+| [iam_bindings_additive](variables.tf#L80) | Individual additive IAM bindings. Keys are arbitrary. | <code>map&#40;object&#40;&#123;&#8230;&#125;&#41;&#41;</code> |  | <code>&#123;&#125;</code> |
+| [instance_create](variables.tf#L130) | Set to false to manage databases and IAM bindings in an existing instance. | <code>bool</code> |  | <code>true</code> |
 
 ## Outputs
 
diff --git a/modules/spanner-instance/main.tf b/modules/spanner-instance/main.tf
index 26a8e3354..445bf3de5 100644
--- a/modules/spanner-instance/main.tf
+++ b/modules/spanner-instance/main.tf
@@ -55,12 +55,14 @@ resource "google_spanner_instance" "spanner_instance" {
     ? var.instance.config.name
     : google_spanner_instance_config.spanner_instance_config[0].name
   )
-  name             = var.instance.name
-  display_name     = coalesce(var.instance.display_name, var.instance.name)
-  num_nodes        = var.instance.num_nodes
-  labels           = var.instance.labels
-  force_destroy    = var.instance.force_destroy
-  processing_units = var.instance.processing_units
+  name                         = var.instance.name
+  display_name                 = coalesce(var.instance.display_name, var.instance.name)
+  num_nodes                    = var.instance.num_nodes
+  labels                       = var.instance.labels
+  force_destroy                = var.instance.force_destroy
+  processing_units             = var.instance.processing_units
+  edition                      = var.instance.edition
+  default_backup_schedule_type = var.instance.default_backup_schedule_type
   dynamic "autoscaling_config" {
     for_each = var.instance.autoscaling == null ? [] : [""]
     content {
@@ -92,6 +94,7 @@ resource "google_spanner_database" "spanner_databases" {
   instance                 = local.spanner_instance.name
   name                     = each.key
   ddl                      = each.value.ddl
+  default_time_zone        = each.value.default_time_zone
   enable_drop_protection   = each.value.enable_drop_protection
   deletion_protection      = false
   version_retention_period = each.value.version_retention_period
diff --git a/modules/spanner-instance/variables.tf b/modules/spanner-instance/variables.tf
index 95a88153a..5fd8044c0 100644
--- a/modules/spanner-instance/variables.tf
+++ b/modules/spanner-instance/variables.tf
@@ -19,6 +19,7 @@ variable "databases" {
   type = map(object({
     database_dialect       = optional(string)
     ddl                    = optional(list(string), [])
+    default_time_zone      = optional(string)
     deletion_protection    = optional(bool)
     enable_drop_protection = optional(bool)
     iam                    = optional(map(list(string)), {})
@@ -115,12 +116,14 @@ variable "instance" {
         ))
       }))
     }))
-    display_name     = optional(string)
-    labels           = optional(map(string), {})
-    name             = string
-    num_nodes        = optional(number)
-    processing_units = optional(number)
-    force_destroy    = optional(bool)
+    display_name                 = optional(string)
+    edition                      = optional(string)
+    default_backup_schedule_type = optional(string)
+    labels                       = optional(map(string), {})
+    name                         = string
+    num_nodes                    = optional(number)
+    processing_units             = optional(number)
+    force_destroy                = optional(bool)
   })
 }