diff --git a/mobi.xcodeproj/project.pbxproj b/mobi.xcodeproj/project.pbxproj
index 0575fea..77dec2d 100644
--- a/mobi.xcodeproj/project.pbxproj
+++ b/mobi.xcodeproj/project.pbxproj
@@ -355,6 +355,7 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
+				English,
 				en,
 			);
 			mainGroup = 150039B218E06BC100D33077;
@@ -431,6 +432,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_GCD_PERFORMANCE = YES;
 				CLANG_ANALYZER_SECURITY_FLOATLOOPCOUNTER = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "compiler-default";
 				CLANG_CXX_LIBRARY = "compiler-default";
@@ -496,7 +498,7 @@
 					/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include,
 					/usr/include/libxml2,
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.12;
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				ONLY_ACTIVE_ARCH = YES;
 				OTHER_CFLAGS = (
 					"-DHAVE_CONFIG_H",
@@ -512,6 +514,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_GCD_PERFORMANCE = YES;
 				CLANG_ANALYZER_SECURITY_FLOATLOOPCOUNTER = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "compiler-default";
 				CLANG_CXX_LIBRARY = "compiler-default";
@@ -571,7 +574,7 @@
 					/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include,
 					/usr/include/libxml2,
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.12;
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				ONLY_ACTIVE_ARCH = YES;
 				OTHER_CFLAGS = (
 					"-DHAVE_CONFIG_H",