diff --git a/README.md b/README.md
index c089585..55ff5cd 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # YPDrawSignatureView
+![Image of Swift Version Badge](https://img.shields.io/badge/Swift-4.1-lightgrey.svg)
 
 Simple class for capturing signatures.
 
@@ -159,7 +160,11 @@ YPDrawSignatureView is available under the MIT license. See the [LICENSE](LICENS
 
 ## Update history
 
-### v1.1.2 - 6/16/17
+### v1.1.3 - 3/30/18
+
+* Minor bugfix.
+
+#### v1.1.2 - 6/16/17
 
 * Minor bugfix.
 
diff --git a/SignatureTest/SignatureTest.xcodeproj/project.pbxproj b/SignatureTest/SignatureTest.xcodeproj/project.pbxproj
index 4df3945..310ff6d 100644
--- a/SignatureTest/SignatureTest.xcodeproj/project.pbxproj
+++ b/SignatureTest/SignatureTest.xcodeproj/project.pbxproj
@@ -191,22 +191,22 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0720;
-				LastUpgradeCheck = 0830;
+				LastUpgradeCheck = 0930;
 				ORGANIZATIONNAME = Yuppielabel;
 				TargetAttributes = {
 					4BE489E41C252F8B00741EAD = {
 						CreatedOnToolsVersion = 7.2;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 0930;
 					};
 					4BE489F81C252F8E00741EAD = {
 						CreatedOnToolsVersion = 7.2;
 						DevelopmentTeam = 784F7MSSDM;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 0930;
 						TestTargetID = 4BE489E41C252F8B00741EAD;
 					};
 					4BE48A031C252F8F00741EAD = {
 						CreatedOnToolsVersion = 7.2;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 0930;
 						TestTargetID = 4BE489E41C252F8B00741EAD;
 					};
 				};
@@ -328,14 +328,22 @@
 				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_DEPRECATED_OBJC_IMPLEMENTATIONS = 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_IMPLICIT_RETAIN_SELF = 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;
@@ -358,7 +366,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.3;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -375,14 +383,22 @@
 				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_DEPRECATED_OBJC_IMPLEMENTATIONS = 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_IMPLICIT_RETAIN_SELF = 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;
@@ -399,7 +415,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.3;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
@@ -416,7 +432,8 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = SignatureTest;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = On;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -430,7 +447,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = SignatureTest;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = On;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
@@ -443,7 +461,8 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.yuppielabel.SignatureTestTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = On;
+				SWIFT_VERSION = 4.0;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/SignatureTest.app/SignatureTest";
 			};
 			name = Debug;
@@ -458,7 +477,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.yuppielabel.SignatureTestTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = On;
+				SWIFT_VERSION = 4.0;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/SignatureTest.app/SignatureTest";
 			};
 			name = Release;
@@ -470,7 +490,8 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.yuppielabel.SignatureTestUITests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = On;
+				SWIFT_VERSION = 4.0;
 				TEST_TARGET_NAME = SignatureTest;
 				USES_XCTRUNNER = YES;
 			};
@@ -484,7 +505,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.yuppielabel.SignatureTestUITests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = On;
+				SWIFT_VERSION = 4.0;
 				TEST_TARGET_NAME = SignatureTest;
 				USES_XCTRUNNER = YES;
 			};
diff --git a/SignatureTest/SignatureTest/Base.lproj/LaunchScreen.storyboard b/SignatureTest/SignatureTest/Base.lproj/LaunchScreen.storyboard
index 2e721e1..9d547ae 100644
--- a/SignatureTest/SignatureTest/Base.lproj/LaunchScreen.storyboard
+++ b/SignatureTest/SignatureTest/Base.lproj/LaunchScreen.storyboard
@@ -1,7 +1,9 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="8150" systemVersion="15A204g" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" initialViewController="01J-lp-oVM">
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14109" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="NO" initialViewController="01J-lp-oVM">
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="8122"/>
+        <deployment identifier="iOS"/>
+        <development version="7000" identifier="xcode"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14088"/>
     </dependencies>
     <scenes>
         <!--View Controller-->
@@ -15,8 +17,7 @@
                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
                         <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <animations/>
-                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="calibratedRGB"/>
                     </view>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
diff --git a/SignatureTest/SignatureTest/YPDrawSignatureView.swift b/SignatureTest/SignatureTest/YPDrawSignatureView.swift
index 1e26b38..98151f2 100644
--- a/SignatureTest/SignatureTest/YPDrawSignatureView.swift
+++ b/SignatureTest/SignatureTest/YPDrawSignatureView.swift
@@ -1,7 +1,7 @@
 // YPDrawSignatureView is open source
-// Version 1.1.2
+// Version 1.1.3
 //
-// Copyright (c) 2014 - 2017 The YPDrawSignatureView Project Contributors
+// Copyright (c) 2014 - 2018 The YPDrawSignatureView Project Contributors
 // Available under the MIT license
 //
 // https://github.com/GJNilsen/YPDrawSignatureView/blob/master/LICENSE   License Information
@@ -27,7 +27,7 @@ import CoreGraphics
 @IBDesignable
 final public class YPDrawSignatureView: UIView {
     
-    weak var delegate: YPSignatureDelegate?
+    public weak var delegate: YPSignatureDelegate?
     
     // MARK: - Public properties
     @IBInspectable public var strokeWidth: CGFloat = 2.0 {
@@ -217,7 +217,7 @@ final public class YPDrawSignatureView: UIView {
 /// - optional didStart()
 /// - optional didFinish()
 @objc
-protocol YPSignatureDelegate: class {
+public protocol YPSignatureDelegate: class {
     func didStart()
     func didFinish()
     @available(*, unavailable, renamed: "didFinish()")
diff --git a/Sources/YPDrawSignatureView.swift b/Sources/YPDrawSignatureView.swift
index 236f60b..79a5574 100644
--- a/Sources/YPDrawSignatureView.swift
+++ b/Sources/YPDrawSignatureView.swift
@@ -1,7 +1,7 @@
 // YPDrawSignatureView is open source
-// Version 1.1.2
+// Version 1.1.3
 //
-// Copyright (c) 2014 - 2017 The YPDrawSignatureView Project Contributors
+// Copyright (c) 2014 - 2018 The YPDrawSignatureView Project Contributors
 // Available under the MIT license
 //
 // https://github.com/GJNilsen/YPDrawSignatureView/blob/master/LICENSE   License Information
@@ -27,7 +27,7 @@ import CoreGraphics
 @IBDesignable
 final public class YPDrawSignatureView: UIView {
     
-    weak var delegate: YPSignatureDelegate?
+    public weak var delegate: YPSignatureDelegate?
     
     // MARK: - Public properties
     @IBInspectable public var strokeWidth: CGFloat = 2.0 {
@@ -209,7 +209,7 @@ final public class YPDrawSignatureView: UIView {
 /// - optional didStart()
 /// - optional didFinish()
 @objc
-protocol YPSignatureDelegate: class {
+public protocol YPSignatureDelegate: class {
     func didStart()
     func didFinish()
     @available(*, unavailable, renamed: "didFinish()")