diff --git a/.travis.yml b/.travis.yml
index a6064ba6..82dbd116 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: objective-c
-osx_image: xcode7.2
+osx_image: xcode7.3
 
 env:
   global:
diff --git a/APIKit.podspec b/APIKit.podspec
index b95df8f6..b458aa34 100644
--- a/APIKit.podspec
+++ b/APIKit.podspec
@@ -33,5 +33,5 @@ Pod::Spec.new do |s|
     LICENSE
   }
 
-  s.dependency "Result", "~> 1.0.1"
+  s.dependency "Result", "~> 2.0.0"
 end
diff --git a/APIKit.xcodeproj/project.pbxproj b/APIKit.xcodeproj/project.pbxproj
index 0ddf47d2..b881de61 100644
--- a/APIKit.xcodeproj/project.pbxproj
+++ b/APIKit.xcodeproj/project.pbxproj
@@ -43,6 +43,16 @@
 		7FAC40341C8F2C900098C4B2 /* Box.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7FAC40331C8F2C900098C4B2 /* Box.swift */; };
 /* End PBXBuildFile section */
 
+/* Begin PBXContainerItemProxy section */
+		7F4A73AC1CA839AE002554B1 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 7F45FCD41A94D02C006863BB /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 141F12161C1C9ABE0026D415;
+			remoteInfo = APIKit;
+		};
+/* End PBXContainerItemProxy section */
+
 /* Begin PBXCopyFilesBuildPhase section */
 		141F12351C1C9AC70026D415 /* Copy Frameworks */ = {
 			isa = PBXCopyFilesBuildPhase;
@@ -342,6 +352,7 @@
 			buildRules = (
 			);
 			dependencies = (
+				7F4A73AD1CA839AE002554B1 /* PBXTargetDependency */,
 			);
 			name = Tests;
 			productName = APIKitTests;
@@ -355,7 +366,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0700;
-				LastUpgradeCheck = 0700;
+				LastUpgradeCheck = 0730;
 				ORGANIZATIONNAME = "Yosuke Ishikawa";
 			};
 			buildConfigurationList = 7F45FCD71A94D02C006863BB /* Build configuration list for PBXProject "APIKit" */;
@@ -439,6 +450,14 @@
 		};
 /* End PBXSourcesBuildPhase section */
 
+/* Begin PBXTargetDependency section */
+		7F4A73AD1CA839AE002554B1 /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 141F12161C1C9ABE0026D415 /* APIKit */;
+			targetProxy = 7F4A73AC1CA839AE002554B1 /* PBXContainerItemProxy */;
+		};
+/* End PBXTargetDependency section */
+
 /* Begin XCBuildConfiguration section */
 		141F12241C1C9ABE0026D415 /* Debug */ = {
 			isa = XCBuildConfiguration;
@@ -472,6 +491,8 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 141F12101C1C96820026D415 /* Debug.xcconfig */;
 			buildSettings = {
+				ENABLE_TESTABILITY = YES;
+				ONLY_ACTIVE_ARCH = YES;
 			};
 			name = Debug;
 		};
diff --git a/APIKit.xcodeproj/xcshareddata/xcschemes/APIKit.xcscheme b/APIKit.xcodeproj/xcshareddata/xcschemes/APIKit.xcscheme
index 2235c35a..5c921853 100644
--- a/APIKit.xcodeproj/xcshareddata/xcschemes/APIKit.xcscheme
+++ b/APIKit.xcodeproj/xcshareddata/xcschemes/APIKit.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0720"
+   LastUpgradeVersion = "0730"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/Cartfile b/Cartfile
index 04b92292..220fa84e 100644
--- a/Cartfile
+++ b/Cartfile
@@ -1 +1 @@
-github "antitypical/Result" ~> 1.0.1
+github "antitypical/Result" ~> 2.0.0
diff --git a/Cartfile.resolved b/Cartfile.resolved
index 613df587..8d6262f8 100644
--- a/Cartfile.resolved
+++ b/Cartfile.resolved
@@ -1,2 +1,2 @@
 github "AliSoftware/OHHTTPStubs" "4.6.0"
-github "antitypical/Result" "1.0.1"
+github "antitypical/Result" "2.0.0"
diff --git a/README.md b/README.md
index ec38b6db..cf63e5f8 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ Session.sendRequest(request) { result in
 
 ## Requirements
 
-- Swift 2.1+
+- Swift 2.2+
 - iOS 8.0+ / Mac OS 10.10+ / watchOS 2.0+ / tvOS 9.0+
 
 ## Installation
diff --git a/Sources/Info.plist b/Sources/Info.plist
index 28a6057e..dc9750ea 100644
--- a/Sources/Info.plist
+++ b/Sources/Info.plist
@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.0</string>
+	<string>1.3.0</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
diff --git a/Sources/RequestType.swift b/Sources/RequestType.swift
index bf377ff1..2642bd43 100644
--- a/Sources/RequestType.swift
+++ b/Sources/RequestType.swift
@@ -10,7 +10,7 @@ import Result
 /// - `func responseFromObject(object: AnyObject, URLResponse: NSHTTPURLResponse) throws -> Response`
 public protocol RequestType {
     /// The response type associated with this request.
-    typealias Response
+    associatedtype Response
 
     /// The base URL.
     var baseURL: NSURL { get }
diff --git a/Sources/Serializations/URLEncodedSerialization.swift b/Sources/Serializations/URLEncodedSerialization.swift
index e8cc37f1..44b8f36c 100644
--- a/Sources/Serializations/URLEncodedSerialization.swift
+++ b/Sources/Serializations/URLEncodedSerialization.swift
@@ -25,7 +25,7 @@ private func escape(string: String) -> String {
     while index != string.endIndex {
         let startIndex = index
         let endIndex = index.advancedBy(batchSize, limit: string.endIndex)
-        let range = Range(start: startIndex, end: endIndex)
+        let range = startIndex..<endIndex
         
         let substring = string.substringWithRange(range)
         
diff --git a/Tests/APIKit/RequestTypeTests.swift b/Tests/APIKit/RequestTypeTests.swift
index 8d673908..743e07c1 100644
--- a/Tests/APIKit/RequestTypeTests.swift
+++ b/Tests/APIKit/RequestTypeTests.swift
@@ -41,7 +41,7 @@ class RequestTypeTests: XCTestCase {
         let URLRequest = try? request.buildURLRequest()
         XCTAssertNotNil(URLRequest?.HTTPBody)
 
-        let json = URLRequest?.HTTPBody.flatMap { try? NSJSONSerialization.JSONObjectWithData($0, options: []) }
+        let json = URLRequest?.HTTPBody.flatMap { try? NSJSONSerialization.JSONObjectWithData($0, options: []) } as? [AnyObject]
         XCTAssertEqual(json?.count, 3)
         XCTAssertEqual(json?[0]["id"], "1")
         XCTAssertEqual(json?[1]["id"], "2")