diff --git a/CoreGPX.podspec b/CoreGPX.podspec
index 9d370ca..bba5bd1 100644
--- a/CoreGPX.podspec
+++ b/CoreGPX.podspec
@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'CoreGPX'
-  s.version          = '0.9.0'
+  s.version          = '0.9.1'
   s.summary          = 'A library for reading and creation of GPX location log files.'
 
 # This description is used to generate tags and improve search results.
@@ -28,9 +28,9 @@ Pod::Spec.new do |s|
   s.social_media_url = 'https://twitter.com/ivincentneo'
 
   s.swift_versions = ['4.2', '5.0']
-  s.ios.deployment_target = '9.0'
-  s.osx.deployment_target = '10.9'
-  s.watchos.deployment_target = '2.0'
+  s.ios.deployment_target = '11.0'
+  s.osx.deployment_target = '10.13'
+  s.watchos.deployment_target = '4.0'
 
   s.source_files = 'Classes'
   
diff --git a/Example/CoreGPX.xcodeproj/project.pbxproj b/Example/CoreGPX.xcodeproj/project.pbxproj
index b10a520..18deb10 100644
--- a/Example/CoreGPX.xcodeproj/project.pbxproj
+++ b/Example/CoreGPX.xcodeproj/project.pbxproj
@@ -505,6 +505,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				DEVELOPMENT_TEAM = 3X69W4AQD6;
 				INFOPLIST_FILE = GPXKit/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				MODULE_NAME = ExampleApp;
 				PRODUCT_BUNDLE_IDENTIFIER = vincent.CoreGPX.example;
@@ -521,6 +522,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				DEVELOPMENT_TEAM = 3X69W4AQD6;
 				INFOPLIST_FILE = GPXKit/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				MODULE_NAME = ExampleApp;
 				PRODUCT_BUNDLE_IDENTIFIER = vincent.CoreGPX.example;
@@ -541,6 +543,7 @@
 					"$(inherited)",
 				);
 				INFOPLIST_FILE = Tests/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "org.cocoapods.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -556,6 +559,7 @@
 				DEVELOPMENT_TEAM = 3X69W4AQD6;
 				FRAMEWORK_SEARCH_PATHS = "$(inherited)";
 				INFOPLIST_FILE = Tests/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "org.cocoapods.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
diff --git a/Example/Pods/Pods.xcodeproj/project.pbxproj b/Example/Pods/Pods.xcodeproj/project.pbxproj
index 19c6414..0a9a481 100644
--- a/Example/Pods/Pods.xcodeproj/project.pbxproj
+++ b/Example/Pods/Pods.xcodeproj/project.pbxproj
@@ -937,7 +937,7 @@
 				GCC_PREFIX_HEADER = "Target Support Files/CoreGPX/CoreGPX-prefix.pch";
 				INFOPLIST_FILE = "Target Support Files/CoreGPX/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				MARKETING_VERSION = 0.9.1;
 				MODULEMAP_FILE = "Target Support Files/CoreGPX/CoreGPX.modulemap";
@@ -1108,7 +1108,7 @@
 				GCC_PREFIX_HEADER = "Target Support Files/CoreGPX/CoreGPX-prefix.pch";
 				INFOPLIST_FILE = "Target Support Files/CoreGPX/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				MARKETING_VERSION = 0.9.1;
 				MODULEMAP_FILE = "Target Support Files/CoreGPX/CoreGPX.modulemap";
@@ -1207,7 +1207,7 @@
 				INFOPLIST_FILE = "$(SRCROOT)/Alternate Targets/CoreGPX-macOS/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/Frameworks";
-				MACOSX_DEPLOYMENT_TARGET = 10.9;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				MARKETING_VERSION = 0.9.1;
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
@@ -1238,7 +1238,7 @@
 				INFOPLIST_FILE = "$(SRCROOT)/Alternate Targets/CoreGPX-macOS/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/Frameworks";
-				MACOSX_DEPLOYMENT_TARGET = 10.9;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				MARKETING_VERSION = 0.9.1;
 				MTL_FAST_MATH = YES;
 				PRODUCT_BUNDLE_IDENTIFIER = "neo.vincent.CoreGPX-macOS";
@@ -1283,7 +1283,7 @@
 				TARGETED_DEVICE_FAMILY = 4;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
-				WATCHOS_DEPLOYMENT_TARGET = 2.0;
+				WATCHOS_DEPLOYMENT_TARGET = 4.0;
 			};
 			name = Debug;
 		};
@@ -1314,7 +1314,7 @@
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
-				WATCHOS_DEPLOYMENT_TARGET = 2.0;
+				WATCHOS_DEPLOYMENT_TARGET = 4.0;
 			};
 			name = Release;
 		};
diff --git a/Package.swift b/Package.swift
index 1cbac73..5a5b80a 100644
--- a/Package.swift
+++ b/Package.swift
@@ -6,7 +6,7 @@ import PackageDescription
 let package = Package(
     name: "CoreGPX",
     platforms: [
-        .iOS(.v9), .macOS(.v10_10), .watchOS(.v2)
+        .iOS(.v11), .macOS(.v10_13), .watchOS(.v4)
     ],
     products: [
         // Products define the executables and libraries produced by a package, and make them visible to other packages.