diff --git a/README.md b/README.md
index fc7eb08..fb1f8c2 100644
--- a/README.md
+++ b/README.md
@@ -63,14 +63,15 @@ module "pubsub" {
   ]
   cloud_storage_subscriptions = [
     {
-      name            = "cloud-storage"  // required
-      bucket          = "example-bucket" // required
-      filename_prefix = "log_events_"    // optional
-      filename_suffix = ".avro"          // optional
-      max_duration    = "60s"            // optional
-      max_bytes       = "10000000"       // optional
-      output_format   = "avro"           // optional
-      write_metadata  = false            // optional
+      name                     = "cloud-storage"        // required
+      bucket                   = "example-bucket"       // required
+      filename_prefix          = "log_events_"          // optional
+      filename_suffix          = ".avro"                // optional
+      filename_datetime_format = "YYYY-MM-DD/hh_mm_ssZ" // optional
+      max_duration             = "60s"                  // optional
+      max_bytes                = "10000000"             // optional
+      output_format            = "avro"                 // optional
+      write_metadata           = false                  // optional
     }
   ]
 }
diff --git a/examples/cloud_storage/main.tf b/examples/cloud_storage/main.tf
index b2ab735..c65beeb 100644
--- a/examples/cloud_storage/main.tf
+++ b/examples/cloud_storage/main.tf
@@ -38,6 +38,9 @@ module "pubsub" {
       name   = "example_bucket_subscription"
       bucket = google_storage_bucket.test.name
 
+      filename_prefix = "example_prefix_"
+      filename_suffix = "_example_suffix"
+      filename_datetime_format = "YYYY-MM-DD/hh_mm_ssZ"
       ack_deadline_seconds = 300
     },
   ]
diff --git a/main.tf b/main.tf
index 9d0659c..452030d 100644
--- a/main.tf
+++ b/main.tf
@@ -439,11 +439,12 @@ resource "google_pubsub_subscription" "cloud_storage_subscriptions" {
   }
 
   cloud_storage_config {
-    bucket          = each.value["bucket"]
-    filename_prefix = lookup(each.value, "filename_prefix", null)
-    filename_suffix = lookup(each.value, "filename_suffix", null)
-    max_duration    = lookup(each.value, "max_duration", null)
-    max_bytes       = lookup(each.value, "max_bytes", null)
+    bucket                   = each.value["bucket"]
+    filename_prefix          = lookup(each.value, "filename_prefix", null)
+    filename_suffix          = lookup(each.value, "filename_suffix", null)
+    filename_datetime_format = lookup(each.value, "filename_datetime_format", null)
+    max_duration             = lookup(each.value, "max_duration", null)
+    max_bytes                = lookup(each.value, "max_bytes", null)
     dynamic "avro_config" {
       for_each = (lookup(each.value, "output_format", "") == "avro") ? [true] : []
       content {
diff --git a/test/setup/versions.tf b/test/setup/versions.tf
index f106432..d1a102e 100644
--- a/test/setup/versions.tf
+++ b/test/setup/versions.tf
@@ -19,11 +19,11 @@ terraform {
   required_providers {
     google = {
       source  = "hashicorp/google"
-      version = ">= 4.78"
+      version = ">= 5.31"
     }
     google-beta = {
       source  = "hashicorp/google-beta"
-      version = ">= 4.78"
+      version = ">= 5.31"
     }
     null = {
       source = "hashicorp/null"
diff --git a/versions.tf b/versions.tf
index f601327..d8860e2 100644
--- a/versions.tf
+++ b/versions.tf
@@ -20,7 +20,7 @@ terraform {
 
     google = {
       source  = "hashicorp/google"
-      version = ">= 4.78, < 6"
+      version = ">= 5.31, < 6"
     }
   }