diff --git a/Cache.xcodeproj/project.pbxproj b/Cache.xcodeproj/project.pbxproj
index be257cbf..e4afeab1 100644
--- a/Cache.xcodeproj/project.pbxproj
+++ b/Cache.xcodeproj/project.pbxproj
@@ -700,6 +700,7 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
+				English,
 				en,
 			);
 			mainGroup = D5DC59D61C20593E003BD79B;
@@ -1027,7 +1028,7 @@
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 9.2;
 			};
@@ -1053,7 +1054,7 @@
 				PRODUCT_NAME = Cache;
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 9.2;
 			};
@@ -1075,7 +1076,7 @@
 				SDKROOT = appletvos;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 				TVOS_DEPLOYMENT_TARGET = 10.0;
 			};
 			name = Debug;
@@ -1094,7 +1095,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "no.hyper.Cache-tvOS-Tests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = appletvos;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 				TVOS_DEPLOYMENT_TARGET = 10.0;
 			};
 			name = Release;
@@ -1109,7 +1110,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "no.hyper.Cache-iOS-Tests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -1122,7 +1123,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "no.hyper.Cache-iOS-Tests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -1145,7 +1146,7 @@
 				PRODUCT_NAME = Cache;
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -1168,7 +1169,7 @@
 				PRODUCT_NAME = Cache;
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -1184,6 +1185,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "no.hyper.Cache-MacTests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = macosx;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -1199,6 +1201,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "no.hyper.Cache-MacTests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = macosx;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -1330,7 +1333,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = no.hyper.Cache;
 				PRODUCT_NAME = Cache;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -1350,7 +1353,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = no.hyper.Cache;
 				PRODUCT_NAME = Cache;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
diff --git a/Cache.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings b/Cache.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
new file mode 100644
index 00000000..0c67376e
--- /dev/null
+++ b/Cache.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
@@ -0,0 +1,5 @@
+<?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/>
+</plist>
diff --git a/Tests/Shared/TestHelper.swift b/Tests/Shared/TestHelper.swift
index ac2be5ac..21473ebb 100644
--- a/Tests/Shared/TestHelper.swift
+++ b/Tests/Shared/TestHelper.swift
@@ -14,8 +14,8 @@ struct TestHelper {
 
   static func triggerApplicationEvents() {
     #if !os(macOS)
-      NotificationCenter.default.post(name: .UIApplicationDidEnterBackground, object: nil)
-      NotificationCenter.default.post(name: .UIApplicationWillTerminate, object: nil)
+    NotificationCenter.default.post(name: UIApplication.didEnterBackgroundNotification, object: nil)
+    NotificationCenter.default.post(name: UIApplication.willTerminateNotification, object: nil)
     #else
       NotificationCenter.default.post(name: NSApplication.willTerminateNotification, object: nil)
       NotificationCenter.default.post(name: NSApplication.didResignActiveNotification, object: nil)