diff --git a/Gifu.xcodeproj/project.pbxproj b/Gifu.xcodeproj/project.pbxproj
index 8e882be..05a1041 100644
--- a/Gifu.xcodeproj/project.pbxproj
+++ b/Gifu.xcodeproj/project.pbxproj
@@ -220,7 +220,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0700;
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 0830;
 				ORGANIZATIONNAME = "Kaishin & Co";
 				TargetAttributes = {
 					009BD1351BBC7F6500FC982B = {
@@ -368,8 +368,10 @@
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
@@ -416,8 +418,10 @@
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
diff --git a/Gifu.xcodeproj/xcshareddata/xcschemes/Gifu.xcscheme b/Gifu.xcodeproj/xcshareddata/xcschemes/Gifu.xcscheme
index 16bae5c..2424e79 100644
--- a/Gifu.xcodeproj/xcshareddata/xcschemes/Gifu.xcscheme
+++ b/Gifu.xcodeproj/xcshareddata/xcschemes/Gifu.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0820"
+   LastUpgradeVersion = "0830"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"