diff --git a/TwicketSegmentedControl/TwicketSegmentedControl.swift b/TwicketSegmentedControl/TwicketSegmentedControl.swift
index 030f3b2..49446b8 100644
--- a/TwicketSegmentedControl/TwicketSegmentedControl.swift
+++ b/TwicketSegmentedControl/TwicketSegmentedControl.swift
@@ -88,7 +88,7 @@ open class TwicketSegmentedControl: UIControl {
         }
     }
 
-    open var font: UIFont = UIFont.systemFont(ofSize: 15, weight: UIFontWeightMedium) {
+    open var font: UIFont = UIFont.systemFont(ofSize: 15, weight: UIFont.Weight.medium) {
         didSet {
             updateLabelsFont(with: font)
         }
diff --git a/TwicketSegmentedControlDemo/TwicketSegmentedControlDemo.xcodeproj/project.pbxproj b/TwicketSegmentedControlDemo/TwicketSegmentedControlDemo.xcodeproj/project.pbxproj
index 73b188e..f4a6b2c 100644
--- a/TwicketSegmentedControlDemo/TwicketSegmentedControlDemo.xcodeproj/project.pbxproj
+++ b/TwicketSegmentedControlDemo/TwicketSegmentedControlDemo.xcodeproj/project.pbxproj
@@ -181,18 +181,19 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0800;
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 0900;
 				ORGANIZATIONNAME = "Pol Quintana";
 				TargetAttributes = {
 					C18581821D8D7220001A9A00 = {
 						CreatedOnToolsVersion = 8.0;
 						DevelopmentTeam = TT6EHSB5EG;
+						LastSwiftMigration = 0900;
 						ProvisioningStyle = Automatic;
 					};
 					C185819C1D8D7237001A9A00 = {
 						CreatedOnToolsVersion = 8.0;
 						DevelopmentTeam = TT6EHSB5EG;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 0900;
 						ProvisioningStyle = Automatic;
 					};
 				};
@@ -295,7 +296,9 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				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_DOCUMENTATION_COMMENTS = YES;
@@ -303,7 +306,12 @@
 				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_SUSPICIOUS_MOVES = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -345,7 +353,9 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				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_DOCUMENTATION_COMMENTS = YES;
@@ -353,7 +363,12 @@
 				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_SUSPICIOUS_MOVES = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -389,7 +404,8 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "Pol-Quintana.TwicketSegmentedControlDemo";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -403,7 +419,8 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "Pol-Quintana.TwicketSegmentedControlDemo";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
@@ -426,7 +443,8 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
+				SWIFT_VERSION = 4.0;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -450,7 +468,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "Pol-Quintana.TwicketSegmentedControl";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
+				SWIFT_VERSION = 4.0;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
diff --git a/TwicketSegmentedControlDemo/TwicketSegmentedControlDemo.xcodeproj/xcshareddata/xcschemes/TwicketSegmentedControl.xcscheme b/TwicketSegmentedControlDemo/TwicketSegmentedControlDemo.xcodeproj/xcshareddata/xcschemes/TwicketSegmentedControl.xcscheme
index db97b44..7688783 100644
--- a/TwicketSegmentedControlDemo/TwicketSegmentedControlDemo.xcodeproj/xcshareddata/xcschemes/TwicketSegmentedControl.xcscheme
+++ b/TwicketSegmentedControlDemo/TwicketSegmentedControlDemo.xcodeproj/xcshareddata/xcschemes/TwicketSegmentedControl.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"