diff --git a/GIMPCore/GIMPCore.xcodeproj/project.pbxproj b/GIMPCore/GIMPCore.xcodeproj/project.pbxproj
index e826e321..c1562e4d 100644
--- a/GIMPCore/GIMPCore.xcodeproj/project.pbxproj
+++ b/GIMPCore/GIMPCore.xcodeproj/project.pbxproj
@@ -344,6 +344,9 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CODE_SIGN_IDENTITY = "Mac Developer";
+				CODE_SIGN_STYLE = Automatic;
+				DEVELOPMENT_TEAM = 8Q9M9WAC2F;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				FRAMEWORK_VERSION = A;
@@ -357,6 +360,7 @@
 				INSTALL_PATH = "@executable_path/../Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = net.sourceforge.seashore.gimpcore;
 				PRODUCT_NAME = GIMPCore;
+				PROVISIONING_PROFILE_SPECIFIER = "";
 				SDKROOT = macosx;
 				WARNING_CFLAGS = (
 					"-Wmost",
@@ -403,6 +407,9 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CODE_SIGN_IDENTITY = "Mac Developer";
+				CODE_SIGN_STYLE = Automatic;
+				DEVELOPMENT_TEAM = 8Q9M9WAC2F;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				FRAMEWORK_VERSION = A;
@@ -416,6 +423,7 @@
 				INSTALL_PATH = "@executable_path/../Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = net.sourceforge.seashore.gimpcore;
 				PRODUCT_NAME = GIMPCore;
+				PROVISIONING_PROFILE_SPECIFIER = "";
 				SDKROOT = macosx;
 				WARNING_CFLAGS = (
 					"-Wmost",
diff --git a/Plugins/Plugins.xcodeproj/project.pbxproj b/Plugins/Plugins.xcodeproj/project.pbxproj
index 921580a3..801e16bd 100644
--- a/Plugins/Plugins.xcodeproj/project.pbxproj
+++ b/Plugins/Plugins.xcodeproj/project.pbxproj
@@ -285,10 +285,11 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_OBJC_ARC = YES;
-				CODE_SIGN_IDENTITY = "";
+				CODE_SIGN_IDENTITY = "Mac Developer";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
 				DEFINES_MODULE = YES;
+				DEVELOPMENT_TEAM = "";
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				FRAMEWORK_VERSION = A;
@@ -297,6 +298,7 @@
 				MACOSX_DEPLOYMENT_TARGET = 10.6;
 				PRODUCT_BUNDLE_IDENTIFIER = net.sourceforge.seashore.plugins;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
 				SKIP_INSTALL = YES;
 			};
 			name = Debug;
@@ -305,10 +307,11 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_OBJC_ARC = YES;
-				CODE_SIGN_IDENTITY = "";
+				CODE_SIGN_IDENTITY = "Mac Developer";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
 				DEFINES_MODULE = YES;
+				DEVELOPMENT_TEAM = "";
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				FRAMEWORK_VERSION = A;
@@ -317,6 +320,7 @@
 				MACOSX_DEPLOYMENT_TARGET = 10.6;
 				PRODUCT_BUNDLE_IDENTIFIER = net.sourceforge.seashore.plugins;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
 				SKIP_INSTALL = YES;
 			};
 			name = Release;
diff --git a/Seashore/Info.plist b/Seashore/Info.plist
index 30c27eaa..01a81c3c 100644
--- a/Seashore/Info.plist
+++ b/Seashore/Info.plist
@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>LSMinimumSystemVersion</key>
+	<string>10.7.0</string>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>English</string>
 	<key>CFBundleDocumentTypes</key>
@@ -328,8 +330,6 @@
 	</array>
 	<key>CFBundleExecutable</key>
 	<string>Seashore</string>
-	<key>CFBundleGetInfoString</key>
-	<string>Seashore 1.0 - GNU General Public License</string>
 	<key>CFBundleIconFile</key>
 	<string>Main Icon.icns</string>
 	<key>CFBundleIdentifier</key>
@@ -346,6 +346,8 @@
 	<string>SeSh</string>
 	<key>CFBundleVersion</key>
 	<string>201901050</string>
+	<key>LSApplicationCategoryType</key>
+	<string>public.app-category.graphics-design</string>
 	<key>NSAppTransportSecurity</key>
 	<dict>
 		<key>NSExceptionDomains</key>
diff --git a/Seashore/Seashore.xcodeproj/project.pbxproj b/Seashore/Seashore.xcodeproj/project.pbxproj
index c3d7a5be..c4067c1d 100644
--- a/Seashore/Seashore.xcodeproj/project.pbxproj
+++ b/Seashore/Seashore.xcodeproj/project.pbxproj
@@ -5405,7 +5405,10 @@
 			buildSettings = {
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_ENABLE_OBJC_WEAK = NO;
+				CODE_SIGN_IDENTITY = "Mac Developer";
+				CODE_SIGN_STYLE = Automatic;
 				COPY_PHASE_STRIP = NO;
+				DEVELOPMENT_TEAM = 8Q9M9WAC2F;
 				FRAMEWORK_SEARCH_PATHS = "$(FRAMEWORK_SEARCH_PATHS)";
 				GCC_GENERATE_DEBUGGING_SYMBOLS = YES;
 				GCC_OPTIMIZATION_LEVEL = 0;
@@ -5426,9 +5429,11 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 10.7;
+				OTHER_CODE_SIGN_FLAGS = "--deep";
 				OTHER_LDFLAGS = "-lz";
 				PRODUCT_BUNDLE_IDENTIFIER = net.sourceforge.seashore;
 				PRODUCT_NAME = Seashore;
+				PROVISIONING_PROFILE_SPECIFIER = "";
 				WARNING_CFLAGS = (
 					"-Wmost",
 					"-Wno-four-char-constants",
@@ -5486,6 +5491,9 @@
 			buildSettings = {
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_ENABLE_OBJC_WEAK = NO;
+				CODE_SIGN_IDENTITY = "Mac Developer";
+				CODE_SIGN_STYLE = Automatic;
+				DEVELOPMENT_TEAM = 8Q9M9WAC2F;
 				FRAMEWORK_SEARCH_PATHS = "$(FRAMEWORK_SEARCH_PATHS)";
 				GCC_AUTO_VECTORIZATION = YES;
 				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
@@ -5506,9 +5514,11 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 10.7;
+				OTHER_CODE_SIGN_FLAGS = "--deep";
 				OTHER_LDFLAGS = "-lz";
 				PRODUCT_BUNDLE_IDENTIFIER = net.sourceforge.seashore;
 				PRODUCT_NAME = Seashore;
+				PROVISIONING_PROFILE_SPECIFIER = "";
 				WARNING_CFLAGS = (
 					"-Wmost",
 					"-Wno-four-char-constants",