diff --git a/AsyncSwift.xcodeproj/project.pbxproj b/AsyncSwift.xcodeproj/project.pbxproj
index 9aba15d..024da29 100644
--- a/AsyncSwift.xcodeproj/project.pbxproj
+++ b/AsyncSwift.xcodeproj/project.pbxproj
@@ -332,7 +332,8 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
 				CODE_SIGN_ENTITLEMENTS = AsyncSwift/AsyncSwift.entitlements;
-				CODE_SIGN_STYLE = Automatic;
+				CODE_SIGN_IDENTITY = "Apple Development: Insub Kim (Y3GMX628H8)";
+				CODE_SIGN_STYLE = Manual;
 				CURRENT_PROJECT_VERSION = 1;
 				DEVELOPMENT_ASSET_PATHS = "\"AsyncSwift/Preview Content\"";
 				DEVELOPMENT_TEAM = 76AJ433CP5;
@@ -351,6 +352,7 @@
 				MARKETING_VERSION = 1.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.kim.AsyncSwift;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = AsyncSwiftProfile;
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 1;
@@ -363,7 +365,8 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
 				CODE_SIGN_ENTITLEMENTS = AsyncSwift/AsyncSwift.entitlements;
-				CODE_SIGN_STYLE = Automatic;
+				CODE_SIGN_IDENTITY = "Apple Development: Insub Kim (Y3GMX628H8)";
+				CODE_SIGN_STYLE = Manual;
 				CURRENT_PROJECT_VERSION = 1;
 				DEVELOPMENT_ASSET_PATHS = "\"AsyncSwift/Preview Content\"";
 				DEVELOPMENT_TEAM = 76AJ433CP5;
@@ -382,6 +385,7 @@
 				MARKETING_VERSION = 1.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.kim.AsyncSwift;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = AsyncSwiftProfile;
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 1;