diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8cee2df..e058a27 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 # Change Log
 ---
 
+## [5.5.1](https://github.com/Decybel07/L10n-swift/tree/5.5.1) (2019-07-19)
+* Swift 5.0 Support [#19](https://github.com/Decybel07/L10n-swift/issues/19)
+
 ## [5.5.0](https://github.com/Decybel07/L10n-swift/tree/5.5.0) (2019-06-20)
 * Support for multiple arguments in plural function [#16](https://github.com/Decybel07/L10n-swift/issues/16)
 
diff --git a/Example/Example iOS/AppDelegate.swift b/Example/Example iOS/AppDelegate.swift
index 7b85ce9..8f728b8 100644
--- a/Example/Example iOS/AppDelegate.swift	
+++ b/Example/Example iOS/AppDelegate.swift	
@@ -13,7 +13,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
     var window: UIWindow?
 
-    func application(_: UIApplication, didFinishLaunchingWithOptions _: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
+    func application(_: UIApplication, didFinishLaunchingWithOptions _: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
         return true
     }
 }
diff --git a/Example/Example iOS/Scenes/ChooseLanguage/ChooseLanguageTableViewController.swift b/Example/Example iOS/Scenes/ChooseLanguage/ChooseLanguageTableViewController.swift
index 8dfb3c6..f57d3d4 100644
--- a/Example/Example iOS/Scenes/ChooseLanguage/ChooseLanguageTableViewController.swift	
+++ b/Example/Example iOS/Scenes/ChooseLanguage/ChooseLanguageTableViewController.swift	
@@ -26,7 +26,7 @@ final class ChooseLanguageTableViewController: UITableViewController {
     override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
 
-        if let row = self.items.index(where: { $0.language == L10n.shared.language }) {
+        if let row = self.items.firstIndex(where: { $0.language == L10n.shared.language }) {
             self.tableView.selectRow(at: IndexPath(row: row, section: 0), animated: true, scrollPosition: .none)
         }
     }
diff --git a/Example/Example iOS/Scenes/SimpleTranslator/SimpleTranslatorViewController.swift b/Example/Example iOS/Scenes/SimpleTranslator/SimpleTranslatorViewController.swift
index 2b011de..dc69808 100644
--- a/Example/Example iOS/Scenes/SimpleTranslator/SimpleTranslatorViewController.swift	
+++ b/Example/Example iOS/Scenes/SimpleTranslator/SimpleTranslatorViewController.swift	
@@ -41,8 +41,8 @@ final class SimpleTranslatorViewController: UIViewController {
     override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
 
-        self.pickerView.selectRow(self.languages.index(of: self.from.language) ?? 0, inComponent: 0, animated: false)
-        self.pickerView.selectRow(self.languages.index(of: self.to.language) ?? 0, inComponent: 1, animated: false)
+        self.pickerView.selectRow(self.languages.firstIndex(of: self.from.language) ?? 0, inComponent: 0, animated: false)
+        self.pickerView.selectRow(self.languages.firstIndex(of: self.to.language) ?? 0, inComponent: 1, animated: false)
     }
 }
 
diff --git a/Example/Example.xcodeproj/project.pbxproj b/Example/Example.xcodeproj/project.pbxproj
index 00a6fc2..4b9e047 100644
--- a/Example/Example.xcodeproj/project.pbxproj
+++ b/Example/Example.xcodeproj/project.pbxproj
@@ -290,7 +290,7 @@
 				TargetAttributes = {
 					2D1714861F2E757B00AADEB5 = {
 						CreatedOnToolsVersion = 8.3.3;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1020;
 						ProvisioningStyle = Automatic;
 					};
 				};
@@ -597,7 +597,7 @@
 				SDKROOT = iphoneos;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Debug;
@@ -651,7 +651,7 @@
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 			};
diff --git a/L10n-swift.podspec b/L10n-swift.podspec
index f34e372..96d6b23 100644
--- a/L10n-swift.podspec
+++ b/L10n-swift.podspec
@@ -2,7 +2,7 @@
 Pod::Spec.new do |spec|
   spec.name             = 'L10n-swift'
   spec.module_name      = 'L10n_swift'
-  spec.version          = '5.5.0'
+  spec.version          = '5.5.1'
   spec.summary          = 'Localization of an application with ability to change language "on the fly" and support for plural forms in any language.'
 
   spec.description      = <<-DESC