diff --git a/internal/provider/group_resource.go b/internal/provider/group_resource.go
index f396108..552a20e 100644
--- a/internal/provider/group_resource.go
+++ b/internal/provider/group_resource.go
@@ -13,6 +13,7 @@ import (
 	"github.com/hashicorp/terraform-plugin-framework/path"
 	"github.com/hashicorp/terraform-plugin-framework/resource"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema"
+	"github.com/hashicorp/terraform-plugin-framework/resource/schema/int32default"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/planmodifier"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringdefault"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringplanmodifier"
@@ -82,6 +83,8 @@ func (r *GroupResource) Schema(ctx context.Context, req resource.SchemaRequest,
 			"quota_allowance": schema.Int32Attribute{
 				MarkdownDescription: "The number of quota credits to allocate to each user in the group.",
 				Optional:            true,
+				Computed:            true,
+				Default:             int32default.StaticInt32(0),
 			},
 			"organization_id": schema.StringAttribute{
 				MarkdownDescription: "The organization ID that the group belongs to. Defaults to the provider default organization ID.",
diff --git a/internal/provider/group_resource_test.go b/internal/provider/group_resource_test.go
index b049976..60b2e2d 100644
--- a/internal/provider/group_resource_test.go
+++ b/internal/provider/group_resource_test.go
@@ -64,6 +64,7 @@ func TestAccGroupResource(t *testing.T) {
 
 	t.Run("CreateImportUpdateReadOk", func(t *testing.T) {
 		resource.Test(t, resource.TestCase{
+			IsUnitTest:               true,
 			PreCheck:                 func() { testAccPreCheck(t) },
 			ProtoV6ProviderFactories: testAccProtoV6ProviderFactories,
 			Steps: []resource.TestStep{
@@ -111,6 +112,7 @@ func TestAccGroupResource(t *testing.T) {
 
 	t.Run("CreateUnmanagedMembersOk", func(t *testing.T) {
 		resource.Test(t, resource.TestCase{
+			IsUnitTest:               true,
 			PreCheck:                 func() { testAccPreCheck(t) },
 			ProtoV6ProviderFactories: testAccProtoV6ProviderFactories,
 			Steps: []resource.TestStep{