diff --git a/filesystem.go b/filesystem.go
index d3e3959..17cb9f3 100644
--- a/filesystem.go
+++ b/filesystem.go
@@ -119,6 +119,7 @@ type BaseGCSFsConfig struct {
 	CredentialFile string `json:"-"`
 	// 0 explicit, 1 automatic
 	AutomaticCredentials int    `json:"automatic_credentials,omitempty"`
+	Endpoint             string `json:"endpoint,omitempty"`
 	StorageClass         string `json:"storage_class,omitempty"`
 	// The ACL to apply to uploaded objects. Leave empty to use the default ACL.
 	// For more information and available ACLs, refer to the JSON API here: