diff --git a/UniversalDetector.xcodeproj/project.pbxproj b/UniversalDetector.xcodeproj/project.pbxproj
index c48ac7c..2ddeb90 100644
--- a/UniversalDetector.xcodeproj/project.pbxproj
+++ b/UniversalDetector.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 55;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -12,7 +12,7 @@
 		1B0DDCB20A2D0B240009B697 /* DetectorTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 1B0DDCB10A2D0B240009B697 /* DetectorTest.m */; };
 		1B0DDCB30A2D0B2E0009B697 /* UniversalDetector.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 8DC2EF5B0486A6940098B216 /* UniversalDetector.framework */; };
 		1B0DDD600A2D1AAD0009B697 /* AppKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 0867D6A5FE840307C02AAC07 /* AppKit.framework */; };
-		1B0DDD630A2D1AC10009B697 /* AppKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 0867D6A5FE840307C02AAC07 /* AppKit.framework */; };
+		1B0DDD630A2D1AC10009B697 /* AppKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 0867D6A5FE840307C02AAC07 /* AppKit.framework */; platformFilters = (macos, ); settings = {ATTRIBUTES = (Required, ); }; };
 		1B23E0911190F2C500620319 /* UniversalDetector.m in Sources */ = {isa = PBXBuildFile; fileRef = 1B0DDC740A2CDD2E0009B697 /* UniversalDetector.m */; };
 		1B23E0931190F2CA00620319 /* CharDistribution.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 1B2F16180EE8895C0000DAFF /* CharDistribution.cpp */; };
 		1B23E0951190F2CF00620319 /* JpCntx.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 1B2F161E0EE8895C0000DAFF /* JpCntx.cpp */; };
@@ -301,18 +301,18 @@
 				1B0DDCAD0A2D0AFD0009B697 /* DetectorTest */,
 				32C88DFF0371C24200C91783 /* Other Sources */,
 				089C1665FE841158C02AAC07 /* Resources */,
-				0867D69AFE84028FC02AAC07 /* External Frameworks and Libraries */,
+				0867D69AFE84028FC02AAC07 /* Frameworks */,
 				034768DFFF38A50411DB9C8B /* Products */,
 			);
 			name = UniversalCharDet;
 			sourceTree = "<group>";
 		};
-		0867D69AFE84028FC02AAC07 /* External Frameworks and Libraries */ = {
+		0867D69AFE84028FC02AAC07 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
 				0867D6A5FE840307C02AAC07 /* AppKit.framework */,
 			);
-			name = "External Frameworks and Libraries";
+			name = Frameworks;
 			sourceTree = "<group>";
 		};
 		089C1665FE841158C02AAC07 /* Resources */ = {
@@ -553,7 +553,7 @@
 				LastUpgradeCheck = 0800;
 			};
 			buildConfigurationList = 1DEB91B108733DA50010E9CD /* Build configuration list for PBXProject "UniversalDetector" */;
-			compatibilityVersion = "Xcode 3.2";
+			compatibilityVersion = "Xcode 13.0";
 			developmentRegion = English;
 			hasScannedForEncodings = 1;
 			knownRegions = (
@@ -868,6 +868,7 @@
 		1B54130913296EE3002AF4B8 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
@@ -880,14 +881,20 @@
 				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
 				GCC_MODEL_TUNING = G5;
 				INFOPLIST_FILE = Info.plist;
-				INSTALL_PATH = "@executable_path/../Frameworks";
+				INSTALL_PATH = "@executable_path/Frameworks";
+				"INSTALL_PATH[sdk=macosx*]" = "@executable_path/../Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "@loader_path";
 				MACOSX_DEPLOYMENT_TARGET = 10.9;
 				PRODUCT_BUNDLE_IDENTIFIER = org.mozilla.universalchardet;
 				PRODUCT_NAME = UniversalDetector;
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos appletvsimulator appletvos";
+				SUPPORTS_MACCATALYST = YES;
+				TVOS_DEPLOYMENT_TARGET = 15.6;
 				WRAPPER_EXTENSION = framework;
+				XROS_DEPLOYMENT_TARGET = 1.3;
 			};
 			name = Release;
 		};
@@ -999,6 +1006,7 @@
 		1DEB91AE08733DA50010E9CD /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
@@ -1013,14 +1021,20 @@
 				GCC_MODEL_TUNING = G5;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				INFOPLIST_FILE = Info.plist;
-				INSTALL_PATH = "@executable_path/../Frameworks";
+				INSTALL_PATH = "@executable_path/Frameworks";
+				"INSTALL_PATH[sdk=macosx*]" = "@executable_path/../Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "@loader_path";
 				MACOSX_DEPLOYMENT_TARGET = 10.9;
 				PRODUCT_BUNDLE_IDENTIFIER = org.mozilla.universalchardet;
 				PRODUCT_NAME = UniversalDetector;
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos appletvsimulator appletvos";
+				SUPPORTS_MACCATALYST = YES;
+				TVOS_DEPLOYMENT_TARGET = 15.6;
 				WRAPPER_EXTENSION = framework;
+				XROS_DEPLOYMENT_TARGET = 1.3;
 			};
 			name = Debug;
 		};