diff --git a/CotEditor.xcodeproj/project.pbxproj b/CotEditor.xcodeproj/project.pbxproj
index ab3253c58a..6372f2f5f2 100644
--- a/CotEditor.xcodeproj/project.pbxproj
+++ b/CotEditor.xcodeproj/project.pbxproj
@@ -3277,7 +3277,6 @@
 				INFOPLIST_FILE = CotEditor/Info.plist;
 				INFOPLIST_KEY_LSApplicationCategoryType = "public.app-category.productivity";
 				MARKETING_VERSION = "5.0.0-alpha";
-				OTHER_SWIFT_FLAGS = "-enable-upcoming-feature ConciseMagicFile -enable-upcoming-feature ExistentialAny -enable-upcoming-feature ForwardTrailingClosures -enable-upcoming-feature ImplicitOpenExistentials -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature IsolatedDefaultValues -enable-upcoming-feature GlobalConcurrency";
 				PRODUCT_BUNDLE_IDENTIFIER = com.coteditor.CotEditor;
 				PRODUCT_NAME = CotEditor;
 				SWIFT_STRICT_CONCURRENCY = targeted;
@@ -3297,7 +3296,6 @@
 				INFOPLIST_FILE = CotEditor/Info.plist;
 				INFOPLIST_KEY_LSApplicationCategoryType = "public.app-category.productivity";
 				MARKETING_VERSION = "5.0.0-alpha";
-				OTHER_SWIFT_FLAGS = "-enable-upcoming-feature ConciseMagicFile -enable-upcoming-feature ExistentialAny -enable-upcoming-feature ForwardTrailingClosures -enable-upcoming-feature ImplicitOpenExistentials -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature IsolatedDefaultValues -enable-upcoming-feature GlobalConcurrency";
 				PRODUCT_BUNDLE_IDENTIFIER = com.coteditor.CotEditor;
 				PRODUCT_NAME = CotEditor;
 				SWIFT_STRICT_CONCURRENCY = targeted;
@@ -3341,7 +3339,6 @@
 				INFOPLIST_FILE = CotEditor/Info.plist;
 				INFOPLIST_KEY_LSApplicationCategoryType = "public.app-category.productivity";
 				MARKETING_VERSION = "5.0.0-alpha";
-				OTHER_SWIFT_FLAGS = "-enable-upcoming-feature ConciseMagicFile -enable-upcoming-feature ExistentialAny -enable-upcoming-feature ForwardTrailingClosures -enable-upcoming-feature ImplicitOpenExistentials -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature IsolatedDefaultValues -enable-upcoming-feature GlobalConcurrency";
 				PRODUCT_BUNDLE_IDENTIFIER = com.coteditor.CotEditor;
 				PRODUCT_NAME = CotEditor;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "$(inherited) SPARKLE";
@@ -3362,7 +3359,6 @@
 				INFOPLIST_FILE = CotEditor/Info.plist;
 				INFOPLIST_KEY_LSApplicationCategoryType = "public.app-category.productivity";
 				MARKETING_VERSION = "5.0.0-alpha";
-				OTHER_SWIFT_FLAGS = "-enable-upcoming-feature ConciseMagicFile -enable-upcoming-feature ExistentialAny -enable-upcoming-feature ForwardTrailingClosures -enable-upcoming-feature ImplicitOpenExistentials -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature IsolatedDefaultValues -enable-upcoming-feature GlobalConcurrency";
 				PRODUCT_BUNDLE_IDENTIFIER = com.coteditor.CotEditor;
 				PRODUCT_NAME = CotEditor;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "$(inherited) SPARKLE";