diff --git a/Examples/ReactionsExample.xcodeproj/project.pbxproj b/Examples/ReactionsExample.xcodeproj/project.pbxproj
index 8d63220..ef5d111 100644
--- a/Examples/ReactionsExample.xcodeproj/project.pbxproj
+++ b/Examples/ReactionsExample.xcodeproj/project.pbxproj
@@ -391,7 +391,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0800;
-				LastUpgradeCheck = 0900;
+				LastUpgradeCheck = 0930;
 				ORGANIZATIONNAME = "Yannick Loriot";
 				TargetAttributes = {
 					CE83F8891DA8F033000943AB = {
@@ -689,7 +689,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.yannickloriot.ReactionsTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/ReactionsExample.app/ReactionsExample";
 			};
 			name = Debug;
@@ -705,7 +705,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.yannickloriot.ReactionsTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/ReactionsExample.app/ReactionsExample";
 			};
 			name = Release;
@@ -724,6 +724,7 @@
 				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_DOCUMENTATION_COMMENTS = YES;
 				CLANG_WARN_EMPTY_BODY = YES;
@@ -731,6 +732,7 @@
 				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;
@@ -782,6 +784,7 @@
 				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_DOCUMENTATION_COMMENTS = YES;
 				CLANG_WARN_EMPTY_BODY = YES;
@@ -789,6 +792,7 @@
 				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;
diff --git a/Examples/ReactionsExample.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/Examples/ReactionsExample.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 0000000..18d9810
--- /dev/null
+++ b/Examples/ReactionsExample.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
diff --git a/Examples/ReactionsExample.xcodeproj/xcshareddata/xcschemes/Reactions.xcscheme b/Examples/ReactionsExample.xcodeproj/xcshareddata/xcschemes/Reactions.xcscheme
index 26e3c53..40e598e 100644
--- a/Examples/ReactionsExample.xcodeproj/xcshareddata/xcschemes/Reactions.xcscheme
+++ b/Examples/ReactionsExample.xcodeproj/xcshareddata/xcschemes/Reactions.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0900"
+   LastUpgradeVersion = "0930"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,7 +26,6 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
       </Testables>
@@ -37,7 +36,6 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"
diff --git a/Examples/ReactionsExample.xcodeproj/xcshareddata/xcschemes/ReactionsTests.xcscheme b/Examples/ReactionsExample.xcodeproj/xcshareddata/xcschemes/ReactionsTests.xcscheme
index 8a5891c..2561cdc 100644
--- a/Examples/ReactionsExample.xcodeproj/xcshareddata/xcschemes/ReactionsTests.xcscheme
+++ b/Examples/ReactionsExample.xcodeproj/xcshareddata/xcschemes/ReactionsTests.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0900"
+   LastUpgradeVersion = "0930"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -10,9 +10,8 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      codeCoverageEnabled = "YES">
+      codeCoverageEnabled = "YES"
+      shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
          <TestableReference
             skipped = "NO">
@@ -32,7 +31,6 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"
diff --git a/Tests/ReactionButtonTests.swift b/Tests/ReactionButtonTests.swift
index 91f7cce..04faa2e 100644
--- a/Tests/ReactionButtonTests.swift
+++ b/Tests/ReactionButtonTests.swift
@@ -184,7 +184,7 @@ class ReactionButtonTests: XCTestCase {
         return currentState
       }
 
-      private override func location(in view: UIView?) -> CGPoint {
+      override func location(in view: UIView?) -> CGPoint {
         return CGPoint(x: 10, y: 10)
       }
     }