diff --git a/.swift-version b/.swift-version
index 9f55b2c..389f774 100644
--- a/.swift-version
+++ b/.swift-version
@@ -1 +1 @@
-3.0
+4.0
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
index 00e54b0..63af5b5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 language: objective-c
-osx_image: xcode8
+osx_image: xcode9
 notifications:
   email: 
     - hsoi@hsoienterprises.com
 script:
-    - xcodebuild -project HELargeCenterTabBarController.xcodeproj -scheme HELargeCenterTabBarController -sdk iphonesimulator10.0 build
+    - xcodebuild -project HELargeCenterTabBarController.xcodeproj -scheme HELargeCenterTabBarController -sdk iphonesimulator11.0 build
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 58e39e2..a559316 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # HELargeCenterTabBarController CHANGELOG
 
+
+## v2.1.0 - 2017-09-23
+
+* Fixing center button position support to better support iPhone X (h/t to @hipwelljo)
+* Xcode 9 and Swift 4 support
+
 ## v2.0.0 - 2016-09-23
 
 * Updated for Swift 3 and Xcode 8. Thank you to @dodgecm
diff --git a/HELargeCenterTabBarController.podspec b/HELargeCenterTabBarController.podspec
index a996002..94060a4 100644
--- a/HELargeCenterTabBarController.podspec
+++ b/HELargeCenterTabBarController.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
   spec.name                 = 'HELargeCenterTabBarController'
-  spec.version              = '2.0.0'
+  spec.version              = '2.1.0'
   spec.homepage             = 'https://github.com/HsoiEnterprises/HELargeCenterTabBarController'
   spec.source               = { :git => 'https://github.com/HsoiEnterprises/HELargeCenterTabBarController.git', :tag => "v#{spec.version}" }
   spec.summary              = 'A Swift UITabBarController with a larger center tab.'
diff --git a/HELargeCenterTabBarController.xcodeproj/project.pbxproj b/HELargeCenterTabBarController.xcodeproj/project.pbxproj
index dc4a080..24101c0 100644
--- a/HELargeCenterTabBarController.xcodeproj/project.pbxproj
+++ b/HELargeCenterTabBarController.xcodeproj/project.pbxproj
@@ -185,15 +185,16 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0700;
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 0900;
 				ORGANIZATIONNAME = "Hsoi Enterprises LLC";
 				TargetAttributes = {
 					7901CBA61BAF16F0005AE0F5 = {
 						CreatedOnToolsVersion = 7.0;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 0900;
 					};
 					7952AF821BAEC32E00789C09 = {
 						CreatedOnToolsVersion = 7.0;
+						LastSwiftMigration = 0900;
 					};
 				};
 			};
@@ -302,7 +303,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.hsoienterprises.HELargeCenterTabBarController;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -323,7 +324,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.hsoienterprises.HELargeCenterTabBarController;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -341,14 +342,20 @@
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_STATIC_ANALYZER_MODE = deep;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -393,14 +400,20 @@
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_STATIC_ANALYZER_MODE = deep;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -438,7 +451,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.hsoienterprises.HELargeCenterTabBarControllerExample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -452,7 +465,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.hsoienterprises.HELargeCenterTabBarControllerExample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
diff --git a/HELargeCenterTabBarController.xcodeproj/xcshareddata/xcschemes/HELargeCenterTabBarController Example.xcscheme b/HELargeCenterTabBarController.xcodeproj/xcshareddata/xcschemes/HELargeCenterTabBarController Example.xcscheme
index bad4f80..5cd50b1 100644
--- a/HELargeCenterTabBarController.xcodeproj/xcshareddata/xcschemes/HELargeCenterTabBarController Example.xcscheme	
+++ b/HELargeCenterTabBarController.xcodeproj/xcshareddata/xcschemes/HELargeCenterTabBarController Example.xcscheme	
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0800"
+   LastUpgradeVersion = "0900"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,6 +26,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
       </Testables>
@@ -45,6 +46,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"
diff --git a/HELargeCenterTabBarController.xcodeproj/xcshareddata/xcschemes/HELargeCenterTabBarController.xcscheme b/HELargeCenterTabBarController.xcodeproj/xcshareddata/xcschemes/HELargeCenterTabBarController.xcscheme
index 76bd5a0..dbe4965 100644
--- a/HELargeCenterTabBarController.xcodeproj/xcshareddata/xcschemes/HELargeCenterTabBarController.xcscheme
+++ b/HELargeCenterTabBarController.xcodeproj/xcshareddata/xcschemes/HELargeCenterTabBarController.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0800"
+   LastUpgradeVersion = "0900"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,6 +26,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
       </Testables>
@@ -36,6 +37,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"
diff --git a/README.md b/README.md
index 842b468..b58f3d4 100644
--- a/README.md
+++ b/README.md
@@ -24,10 +24,11 @@ Simple. Lightweight. To-the-point.
 
 # Supported OS and SDK
 
-- Xcode 8+
-- Swift 3+
+- Xcode 9+
+- Swift 4+
 - iOS 8 (minimum, required)
 
+As of v2.1, only Swift 4 is supported. If you need Swift 3 support, use v2.0.
 As of v2.0, only Swift 3 is supported. If you need Swift 2.2 support, use v1.0.1.
 
 
@@ -50,7 +51,7 @@ CocoaPods 0.36 adds supports for Swift and embedded frameworks. You can install
 $ gem install cocoapods
 ```
 
-To integrate HEAlert into your Xcode project using CocoaPods, specify it in your `Podfile`:
+To integrate HELargeCenterTabBarController into your Xcode project using CocoaPods, specify it in your `Podfile`:
 
 ```ruby
 source 'https://github.com/CocoaPods/Specs.git'