diff --git a/README.md b/README.md
index dea0eaaa..4f96b663 100644
--- a/README.md
+++ b/README.md
@@ -92,7 +92,7 @@ module "pubsub" {
 | grant\_token\_creator | Specify true if you want to add token creator role to the default Pub/Sub SA. | `bool` | `true` | no |
 | message\_storage\_policy | A map of storage policies. Default - inherit from organization's Resource Location Restriction policy. | `map(any)` | `{}` | no |
 | project\_id | The project ID to manage the Pub/Sub resources. | `string` | n/a | yes |
-| pull\_subscriptions | The list of the pull subscriptions. | <pre>list(object({<br>    name                         = string,<br>    ack_deadline_seconds         = optional(number),<br>    dead_letter_topic            = optional(string),<br>    max_delivery_attempts        = optional(number),<br>    retain_acked_messages        = optional(bool),<br>    message_retention_duration   = optional(string),<br>    maximum_backoff              = optional(string),<br>    minimum_backoff              = optional(string),<br>    filter                       = optional(string),<br>    enable_message_ordering      = optional(bool),<br>    service_account              = optional(string),<br>    enable_exactly_once_delivery = optional(bool),<br>  }))</pre> | `[]` | no |
+| pull\_subscriptions | The list of the pull subscriptions. | <pre>list(object({<br>    name                         = string,<br>    ack_deadline_seconds         = optional(number),<br>    expiration_policy            = optional(string),<br>    dead_letter_topic            = optional(string),<br>    max_delivery_attempts        = optional(number),<br>    retain_acked_messages        = optional(bool),<br>    message_retention_duration   = optional(string),<br>    maximum_backoff              = optional(string),<br>    minimum_backoff              = optional(string),<br>    filter                       = optional(string),<br>    enable_message_ordering      = optional(bool),<br>    service_account              = optional(string),<br>    enable_exactly_once_delivery = optional(bool),<br>  }))</pre> | `[]` | no |
 | push\_subscriptions | The list of the push subscriptions. | <pre>list(object({<br>    name                       = string,<br>    ack_deadline_seconds       = optional(number),<br>    push_endpoint              = optional(string),<br>    x-goog-version             = optional(string),<br>    oidc_service_account_email = optional(string),<br>    audience                   = optional(string),<br>    expiration_policy          = optional(string),<br>    dead_letter_topic          = optional(string),<br>    retain_acked_messages      = optional(bool),<br>    message_retention_duration = optional(string),<br>    max_delivery_attempts      = optional(number),<br>    maximum_backoff            = optional(string),<br>    minimum_backoff            = optional(string),<br>    filter                     = optional(string),<br>    enable_message_ordering    = optional(bool),<br>  }))</pre> | `[]` | no |
 | schema | Schema for the topic. | <pre>object({<br>    name       = string<br>    type       = string<br>    definition = string<br>    encoding   = string<br>  })</pre> | `null` | no |
 | subscription\_labels | A map of labels to assign to every Pub/Sub subscription. | `map(string)` | `{}` | no |
diff --git a/examples/simple/main.tf b/examples/simple/main.tf
index e7a5f92e..4a3be7a0 100644
--- a/examples/simple/main.tf
+++ b/examples/simple/main.tf
@@ -37,9 +37,10 @@ module "pubsub" {
       enable_exactly_once_delivery = true
     },
     {
-      name            = "pull2"
-      minimum_backoff = "10s"
-      maximum_backoff = "600s"
+      name              = "pull2"
+      minimum_backoff   = "10s"
+      maximum_backoff   = "600s"
+      expiration_policy = "1209600s" // two weeks
     },
   ]
 
@@ -51,6 +52,11 @@ module "pubsub" {
       ack_deadline_seconds = 20
       expiration_policy    = "1209600s" // two weeks
     },
+    {
+      name           = "push-default-expiration"
+      push_endpoint  = "https://${var.project_id}.appspot.com/"
+      x-goog-version = "v1beta1"
+    },
   ]
 
   schema = {
diff --git a/main.tf b/main.tf
index e67ff121..81a09d2c 100644
--- a/main.tf
+++ b/main.tf
@@ -181,7 +181,7 @@ resource "google_pubsub_subscription" "push_subscriptions" {
   enable_message_ordering    = each.value.enable_message_ordering
   dynamic "expiration_policy" {
     // check if the 'expiration_policy' key exists, if yes, return a list containing it.
-    for_each = contains(keys(each.value), "expiration_policy") ? [each.value.expiration_policy] : []
+    for_each = each.value.expiration_policy != null ? [each.value.expiration_policy] : []
     content {
       ttl = expiration_policy.value
     }
@@ -240,7 +240,7 @@ resource "google_pubsub_subscription" "pull_subscriptions" {
   enable_message_ordering      = each.value.enable_message_ordering
   dynamic "expiration_policy" {
     // check if the 'expiration_policy' key exists, if yes, return a list containing it.
-    for_each = contains(keys(each.value), "expiration_policy") ? [each.value.expiration_policy] : []
+    for_each = each.value.expiration_policy != null ? [each.value.expiration_policy] : []
     content {
       ttl = expiration_policy.value
     }
diff --git a/metadata.yaml b/metadata.yaml
index 2d44b5a7..73edf13e 100644
--- a/metadata.yaml
+++ b/metadata.yaml
@@ -27,7 +27,7 @@ spec:
     version: 8.0.1
     actuationTool:
       flavor: Terraform
-      version: ">= 0.13"
+      version: ">= 1.3"
     description: {}
   content:
     examples:
@@ -96,12 +96,13 @@ spec:
           list(object({
               name                         = string,
               ack_deadline_seconds         = optional(number),
+              expiration_policy            = optional(string),
               dead_letter_topic            = optional(string),
               max_delivery_attempts        = optional(number),
               retain_acked_messages        = optional(bool),
               message_retention_duration   = optional(string),
-              maximum_backoff              = optional(number),
-              minimum_backoff              = optional(number),
+              maximum_backoff              = optional(string),
+              minimum_backoff              = optional(string),
               filter                       = optional(string),
               enable_message_ordering      = optional(bool),
               service_account              = optional(string),
diff --git a/test/integration/simple/simple_test.go b/test/integration/simple/simple_test.go
index efa4aa46..cfc0adb4 100755
--- a/test/integration/simple/simple_test.go
+++ b/test/integration/simple/simple_test.go
@@ -67,6 +67,7 @@ func TestSimple(t *testing.T) {
 		op = gcloud.Runf(t, "pubsub subscriptions describe pull2 --project=%s", projectId)
 		assert.Equal("600s", op.Get("retryPolicy.maximumBackoff").String(), "has expected maximum_backoff")
 		assert.Equal("10s", op.Get("retryPolicy.minimumBackoff").String(), "has expected minimum_backoff")
+		assert.Equal("1209600s", op.Get("expirationPolicy.ttl").String(), "has expected expiration_policy")
 
 		op = gcloud.Runf(t, "pubsub schemas describe example --project=%s", projectId)
 		assert.Equal(fmt.Sprintf("projects/%s/schemas/example", projectId), op.Get("name").String(), "has expected name")
diff --git a/variables.tf b/variables.tf
index 69612d41..5e6c5b45 100644
--- a/variables.tf
+++ b/variables.tf
@@ -67,6 +67,7 @@ variable "pull_subscriptions" {
   type = list(object({
     name                         = string,
     ack_deadline_seconds         = optional(number),
+    expiration_policy            = optional(string),
     dead_letter_topic            = optional(string),
     max_delivery_attempts        = optional(number),
     retain_acked_messages        = optional(bool),