diff --git a/modules/mysql/README.md b/modules/mysql/README.md
index 87c6aeaa..a102abfa 100644
--- a/modules/mysql/README.md
+++ b/modules/mysql/README.md
@@ -85,7 +85,7 @@ module "mysql-db" {
 | master\_instance\_name | The name of the existing instance that will act as the master in the replication setup. | `string` | `null` | no |
 | module\_depends\_on | List of modules or resources this module depends on. | `list(any)` | `[]` | no |
 | name | The name of the Cloud SQL resources | `string` | n/a | yes |
-| password\_validation\_policy\_config | The password validation policy settings for the database instance. | <pre>object({<br>    enable_password_policy      = bool<br>    min_length                  = number<br>    complexity                  = string<br>    disallow_username_substring = bool<br>  })</pre> | `null` | no |
+| password\_validation\_policy\_config | The password validation policy settings for the database instance. | <pre>object({<br>    enable_password_policy      = bool<br>    min_length                  = optional(number)<br>    complexity                  = optional(string)<br>    disallow_username_substring = optional(bool)<br>    reuse_interval              = optional(number)<br>  })</pre> | `null` | no |
 | pricing\_plan | The pricing plan for the master instance. | `string` | `"PER_USE"` | no |
 | project\_id | The project ID to manage the Cloud SQL resources | `string` | n/a | yes |
 | random\_instance\_name | Sets random suffix at the end of the Cloud SQL resource name | `bool` | `false` | no |
diff --git a/modules/mysql/main.tf b/modules/mysql/main.tf
index a408118b..df17b938 100644
--- a/modules/mysql/main.tf
+++ b/modules/mysql/main.tf
@@ -125,6 +125,7 @@ resource "google_sql_database_instance" "default" {
         min_length                  = lookup(password_validation_policy.value, "min_length", null)
         complexity                  = lookup(password_validation_policy.value, "complexity", null)
         disallow_username_substring = lookup(password_validation_policy.value, "disallow_username_substring", null)
+        reuse_interval              = lookup(password_validation_policy.value, "reuse_interval", null)
       }
     }
     dynamic "ip_configuration" {
diff --git a/modules/mysql/variables.tf b/modules/mysql/variables.tf
index 42a6eb99..a3e540ae 100644
--- a/modules/mysql/variables.tf
+++ b/modules/mysql/variables.tf
@@ -337,9 +337,10 @@ variable "password_validation_policy_config" {
   description = "The password validation policy settings for the database instance."
   type = object({
     enable_password_policy      = bool
-    min_length                  = number
-    complexity                  = string
-    disallow_username_substring = bool
+    min_length                  = optional(number)
+    complexity                  = optional(string)
+    disallow_username_substring = optional(bool)
+    reuse_interval              = optional(number)
   })
   default = null
 }