diff --git a/digitalocean/database/resource_database_cluster.go b/digitalocean/database/resource_database_cluster.go
index d6082fe98..d207b8e65 100644
--- a/digitalocean/database/resource_database_cluster.go
+++ b/digitalocean/database/resource_database_cluster.go
@@ -364,7 +364,11 @@ func resourceDigitalOceanDatabaseClusterUpdate(ctx context.Context, d *schema.Re
 			SizeSlug: d.Get("size").(string),
 			NumNodes: d.Get("node_count").(int),
 		}
-		if v, ok := d.GetOk("storage_size_mib"); ok {
+
+		// only include the storage_size_mib in the resize request if it has changed
+		// this avoids invalid values when plans sizes are increasing that require higher base levels of storage
+		// excluding this parameter will utilize default base storage levels for the given plan size
+		if v, ok := d.GetOk("storage_size_mib"); ok && d.HasChange("storage_size_mib") {
 			v, err := strconv.ParseUint(v.(string), 10, 64)
 			if err == nil {
 				opts.StorageSizeMib = v
diff --git a/digitalocean/database/resource_database_cluster_test.go b/digitalocean/database/resource_database_cluster_test.go
index d053701a8..82b4ac928 100644
--- a/digitalocean/database/resource_database_cluster_test.go
+++ b/digitalocean/database/resource_database_cluster_test.go
@@ -930,7 +930,7 @@ const testAccCheckDigitalOceanDatabaseClusterConfigMongoDB = `
 resource "digitalocean_database_cluster" "foobar" {
   name       = "%s"
   engine     = "mongodb"
-  version    = "4"
+  version    = "6"
   size       = "db-s-1vcpu-1gb"
   region     = "nyc3"
   node_count = 1
diff --git a/digitalocean/database/resource_database_user_test.go b/digitalocean/database/resource_database_user_test.go
index 1a036379e..b4be3f3e8 100644
--- a/digitalocean/database/resource_database_user_test.go
+++ b/digitalocean/database/resource_database_user_test.go
@@ -363,7 +363,7 @@ const testAccCheckDigitalOceanDatabaseUserConfigMongo = `
 resource "digitalocean_database_cluster" "foobar" {
   name       = "%s"
   engine     = "mongodb"
-  version    = "4"
+  version    = "6"
   size       = "db-s-1vcpu-1gb"
   region     = "nyc1"
   node_count = 1
@@ -383,7 +383,7 @@ const testAccCheckDigitalOceanDatabaseUserConfigMongoMultiUser = `
 resource "digitalocean_database_cluster" "foobar" {
   name       = "%s"
   engine     = "mongodb"
-  version    = "4"
+  version    = "6"
   size       = "db-s-1vcpu-1gb"
   region     = "nyc1"
   node_count = 1
diff --git a/docs/resources/database_cluster.md b/docs/resources/database_cluster.md
index 1d0ff59bf..890b79c62 100644
--- a/docs/resources/database_cluster.md
+++ b/docs/resources/database_cluster.md
@@ -61,7 +61,7 @@ resource "digitalocean_database_cluster" "kafka-example" {
 resource "digitalocean_database_cluster" "mongodb-example" {
   name       = "example-mongo-cluster"
   engine     = "mongodb"
-  version    = "4"
+  version    = "6"
   size       = "db-s-1vcpu-1gb"
   region     = "nyc3"
   node_count = 1