diff --git a/SwiftyTimer.podspec b/SwiftyTimer.podspec
index 06db5d9..d7e46d4 100644
--- a/SwiftyTimer.podspec
+++ b/SwiftyTimer.podspec
@@ -6,7 +6,7 @@ Pod::Spec.new do |s|
   s.homepage = 'https://github.com/radex/SwiftyTimer'
   s.authors = { 'Radek Pietruszewski' => 'this.is@radex.io' }
   s.source = { git: 'https://github.com/radex/SwiftyTimer.git', tag: s.version }
-  s.swift_version = '4.2'
+  s.swift_version = '5.0'
   s.requires_arc = true
   s.ios.deployment_target = '8.0'
   s.osx.deployment_target = '10.9'
diff --git a/SwiftyTimer.xcodeproj/project.pbxproj b/SwiftyTimer.xcodeproj/project.pbxproj
index e1f7577..58dba10 100644
--- a/SwiftyTimer.xcodeproj/project.pbxproj
+++ b/SwiftyTimer.xcodeproj/project.pbxproj
@@ -210,7 +210,7 @@
 				TargetAttributes = {
 					3E721ABA1BF7255D008AF027 = {
 						CreatedOnToolsVersion = 7.1;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 1020;
 					};
 					6E7E40891C84B1A20030CEBB = {
 						CreatedOnToolsVersion = 7.2;
@@ -228,6 +228,7 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
+				English,
 				en,
 			);
 			mainGroup = 3E721AB11BF7255C008AF027;
@@ -363,7 +364,7 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -416,7 +417,7 @@
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";
@@ -441,7 +442,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = io.radex.SwiftyTimer;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -462,7 +463,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = io.radex.SwiftyTimer;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -485,7 +486,7 @@
 				PRODUCT_NAME = SwiftyTimer;
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -508,7 +509,7 @@
 				PRODUCT_NAME = SwiftyTimer;
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -528,7 +529,7 @@
 				PRODUCT_NAME = SwiftyTimer;
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 			};
@@ -550,7 +551,7 @@
 				PRODUCT_NAME = SwiftyTimer;
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 			};
@@ -572,7 +573,7 @@
 				PRODUCT_NAME = SwiftyTimer;
 				SDKROOT = watchos;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 4;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;
 			};
@@ -594,7 +595,7 @@
 				PRODUCT_NAME = SwiftyTimer;
 				SDKROOT = watchos;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 4;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;
 			};