diff --git a/Package.swift b/Package.swift
index c2b750e..e5f11e5 100644
--- a/Package.swift
+++ b/Package.swift
@@ -21,7 +21,7 @@ let package = Package(
     dependencies: [
         .package(
             url: "https://github.com/firebase/firebase-ios-sdk.git",
-            .upToNextMajor(from: "9.0.0")
+            .upToNextMajor(from: "10.0.0")
         ),
     ],
     targets: [
diff --git a/Tests/SwiftyRemoteConfigTests/Helpers/SwiftyRemoteConfig+Workaround.swift b/Tests/SwiftyRemoteConfigTests/Helpers/SwiftyRemoteConfig+Workaround.swift
deleted file mode 100644
index 9f08d12..0000000
--- a/Tests/SwiftyRemoteConfigTests/Helpers/SwiftyRemoteConfig+Workaround.swift
+++ /dev/null
@@ -1,85 +0,0 @@
-//
-//  SwiftyRemoteConfig+Workaround.swift
-//  
-//
-//  Created by Fumito Ito on 2022/05/14.
-//
-
-import Foundation
-import SwiftyRemoteConfig
-
-extension RemoteConfigSerializable {
-    public static var _remoteConfigArray: RemoteConfigArrayBridge<[T]> { RemoteConfigArrayBridge() }
-}
-
-extension Date: RemoteConfigSerializable {
-    public static var _remoteConfig: RemoteConfigObjectBridge<Date> { RemoteConfigObjectBridge() }
-}
-
-extension String: RemoteConfigSerializable {
-    public static var _remoteConfig: RemoteConfigStringBridge { RemoteConfigStringBridge() }
-}
-
-extension Int: RemoteConfigSerializable {
-    public static var _remoteConfig: RemoteConfigIntBridge { RemoteConfigIntBridge() }
-}
-
-extension Double: RemoteConfigSerializable {
-    public static var _remoteConfig: RemoteConfigDoubleBridge { return RemoteConfigDoubleBridge() }
-}
-
-extension Bool: RemoteConfigSerializable {
-    public static var _remoteConfig: RemoteConfigBoolBridge { RemoteConfigBoolBridge() }
-}
-
-extension Data: RemoteConfigSerializable {
-    public static var _remoteConfig: RemoteConfigDataBridge { RemoteConfigDataBridge() }
-}
-
-extension URL: RemoteConfigSerializable {
-    public static var _remoteConfig: RemoteConfigUrlBridge { RemoteConfigUrlBridge() }
-    public static var _remoteConfigArray: RemoteConfigCodableBridge<[URL]> { RemoteConfigCodableBridge() }
-}
-
-extension RemoteConfigSerializable where Self: Codable {
-    public static var _remoteConfig: RemoteConfigCodableBridge<Self> { RemoteConfigCodableBridge() }
-    public static var _remoteConfigArray: RemoteConfigCodableBridge<[Self]> { RemoteConfigCodableBridge() }
-}
-
-extension RemoteConfigSerializable where Self: RawRepresentable {
-    public static var _remoteConfig: RemoteConfigRawRepresentableBridge<Self> { RemoteConfigRawRepresentableBridge() }
-    public static var _remoteConfigArray: RemoteConfigRawRepresentableArrayBridge<[Self]> { RemoteConfigRawRepresentableArrayBridge() }
-}
-
-extension RemoteConfigSerializable where Self: NSCoding {
-    public static var _remoteConfig: RemoteConfigKeyedArchiverBridge<Self> { RemoteConfigKeyedArchiverBridge() }
-    public static var _remoteConfigArray: RemoteConfigKeyedArchiverArrayBridge<[Self]> { RemoteConfigKeyedArchiverArrayBridge() }
-}
-
-extension Dictionary: RemoteConfigSerializable where Key == String {
-    public typealias T = [Key: Value]
-    public typealias Bridge = RemoteConfigObjectBridge<T>
-    public typealias ArrayBridge = RemoteConfigArrayBridge<[T]>
-
-    public static var _remoteConfig: Bridge { Bridge() }
-    public static var _remoteConfigArray: ArrayBridge { ArrayBridge() }
-}
-
-extension Array: RemoteConfigSerializable where Element: RemoteConfigSerializable {
-    public typealias T = [Element.T]
-    public typealias Bridge = Element.ArrayBridge
-    public typealias ArrayBridge = RemoteConfigObjectBridge<[T]>
-
-    public static var _remoteConfig: Bridge { Element._remoteConfigArray }
-    public static var _remoteConfigArray: ArrayBridge {
-        fatalError("Multidimensional arrays are not supported yet")
-    }
-}
-
-extension Optional: RemoteConfigSerializable where Wrapped: RemoteConfigSerializable {
-    public typealias Bridge = RemoteConfigOptionalBridge<Wrapped.Bridge>
-    public typealias ArrayBridge = RemoteConfigOptionalBridge<Wrapped.ArrayBridge>
-
-    public static var _remoteConfig: Bridge { RemoteConfigOptionalBridge(bridge: Wrapped._remoteConfig) }
-    public static var _remoteConfigArray: ArrayBridge { RemoteConfigOptionalBridge(bridge: Wrapped._remoteConfigArray) }
-}