diff --git a/generated.go b/generated.go
index c570350..db48d3a 100644
--- a/generated.go
+++ b/generated.go
@@ -4,6 +4,7 @@ package gcs
 import (
 	"context"
 	"io"
+	"net/http"
 	"time"
 
 	"github.com/beyondstorage/go-storage/v4/pkg/httpclient"
@@ -15,6 +16,7 @@ var _ Storager
 var _ services.ServiceError
 var _ httpclient.Options
 var _ time.Duration
+var _ http.Request
 
 // Type is the type for gcs
 const Type = "gcs"
@@ -88,6 +90,21 @@ func WithDefaultStoragePairs(v DefaultStoragePairs) Pair {
 	}
 }
 
+// WithEnableVirtualDir will apply enable_virtual_dir value to Options.
+//
+// VirtualDir virtual_dir feature is designed for a service that doesn't have native dir support but wants to provide simulated operations.
+//
+// - If this feature is disabled (the default behavior), the service will behave like it doesn't have any dir support.
+// - If this feature is enabled, the service will support simulated dir behavior in create_dir, create, list, delete, and so on.
+//
+// This feature was introduced in GSP-109.
+func WithEnableVirtualDir() Pair {
+	return Pair{
+		Key:   "enable_virtual_dir",
+		Value: true,
+	}
+}
+
 // WithEncryptionKey will apply encryption_key value to Options.
 //
 // EncryptionKey is the customer's 32-byte AES-256 key
@@ -158,6 +175,7 @@ var pairMap = map[string]string{
 	"credential":            "string",
 	"default_service_pairs": "DefaultServicePairs",
 	"default_storage_pairs": "DefaultStoragePairs",
+	"enable_virtual_dir":    "bool",
 	"encryption_key":        "[]byte",
 	"endpoint":              "string",
 	"expire":                "time.Duration",
diff --git a/go.mod b/go.mod
index 39e534e..f6834a7 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.15
 require (
 	cloud.google.com/go/storage v1.16.0
 	github.com/beyondstorage/go-integration-test/v4 v4.2.0
-	github.com/beyondstorage/go-storage/v4 v4.4.0
+	github.com/beyondstorage/go-storage/v4 v4.5.0
 	github.com/google/uuid v1.3.0
 	golang.org/x/oauth2 v0.0.0-20210628180205-a41e5a781914
 	google.golang.org/api v0.50.0
diff --git a/go.sum b/go.sum
index f840f0f..a541fdb 100644
--- a/go.sum
+++ b/go.sum
@@ -48,8 +48,8 @@ github.com/Xuanwo/templateutils v0.1.0/go.mod h1:OdE0DJ+CJxDBq6psX5DPV+gOZi8bhuH
 github.com/beyondstorage/go-integration-test/v4 v4.2.0 h1:h2+SLmlDqjfBg+NzVcDr6VCmcD7I2xG+mqMzDlaCG+0=
 github.com/beyondstorage/go-integration-test/v4 v4.2.0/go.mod h1:jLyYWSGUjQRH7U1HdaLbXE5sxBgqrtK73q+Q7PGIuSs=
 github.com/beyondstorage/go-storage/v4 v4.3.0/go.mod h1:0fdcRCzLKMQe7Ve4zPlyTGgoPYwuINiV79Gx9tCt9tQ=
-github.com/beyondstorage/go-storage/v4 v4.4.0 h1:sWURraKFjNR4qpwthr45cAGOIx6EOLrrJcz6su4Je30=
-github.com/beyondstorage/go-storage/v4 v4.4.0/go.mod h1:mc9VzBImjXDg1/1sLfta2MJH79elfM6m47ZZvZ+q/Uw=
+github.com/beyondstorage/go-storage/v4 v4.5.0 h1:cWkX1A+yVLldEpj/Ad9capev9K1fbVIVcRvwqWsMgpw=
+github.com/beyondstorage/go-storage/v4 v4.5.0/go.mod h1:mc9VzBImjXDg1/1sLfta2MJH79elfM6m47ZZvZ+q/Uw=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=