diff --git a/Examples/Example-iOS/Example-iOS.xcodeproj/project.pbxproj b/Examples/Example-iOS/Example-iOS.xcodeproj/project.pbxproj
index e6431ce..3559e6c 100644
--- a/Examples/Example-iOS/Example-iOS.xcodeproj/project.pbxproj
+++ b/Examples/Example-iOS/Example-iOS.xcodeproj/project.pbxproj
@@ -232,7 +232,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -280,7 +280,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				VALIDATE_PRODUCT = YES;
diff --git a/Examples/Example-iOS/Example-iOS.xcodeproj/xcshareddata/xcschemes/Example-iOS.xcscheme b/Examples/Example-iOS/Example-iOS.xcodeproj/xcshareddata/xcschemes/Example-iOS.xcscheme
index 0a2351c..e26577f 100644
--- a/Examples/Example-iOS/Example-iOS.xcodeproj/xcshareddata/xcschemes/Example-iOS.xcscheme
+++ b/Examples/Example-iOS/Example-iOS.xcodeproj/xcshareddata/xcschemes/Example-iOS.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1140"
+   LastUpgradeVersion = "1200"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/Lib/Configurations/Base.xcconfig b/Lib/Configurations/Base.xcconfig
index fb96755..5f9d399 100644
--- a/Lib/Configurations/Base.xcconfig
+++ b/Lib/Configurations/Base.xcconfig
@@ -24,6 +24,7 @@ CLANG_WARN_NULLABLE_TO_NONNULL_CONVERSION = YES;
 CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 CLANG_WARN_STRICT_PROTOTYPES = YES;
 CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -45,6 +46,6 @@ CODE_SIGN_IDENTITY = ;
 DEVELOPMENT_TEAM = ;
 
 MACOSX_DEPLOYMENT_TARGET = 10.9;
-IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 WATCHOS_DEPLOYMENT_TARGET = 2.0;
 TVOS_DEPLOYMENT_TARGET = 9.0;
diff --git a/Lib/Configurations/libUICKeyChainStore.xcconfig b/Lib/Configurations/libUICKeyChainStore.xcconfig
index 2946fde..3184e53 100644
--- a/Lib/Configurations/libUICKeyChainStore.xcconfig
+++ b/Lib/Configurations/libUICKeyChainStore.xcconfig
@@ -15,7 +15,7 @@ SUPPORTED_PLATFORMS = macosx iphoneos iphonesimulator watchos watchsimulator app
 TARGETED_DEVICE_FAMILY = 1,2,3,4;
 
 MACOSX_DEPLOYMENT_TARGET = 10.6;
-IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 
 LD_RUNPATH_SEARCH_PATHS[sdk=macosx*] = $(inherited) @executable_path/../Frameworks @loader_path/../Frameworks;
 LD_RUNPATH_SEARCH_PATHS[sdk=iphone*] = $(inherited) @executable_path/Frameworks @loader_path/Frameworks;
diff --git a/Lib/UICKeyChainStore.xcodeproj/project.pbxproj b/Lib/UICKeyChainStore.xcodeproj/project.pbxproj
index 591fc48..91888af 100644
--- a/Lib/UICKeyChainStore.xcodeproj/project.pbxproj
+++ b/Lib/UICKeyChainStore.xcodeproj/project.pbxproj
@@ -279,7 +279,7 @@
 		14A59C941A62CF6E006561CC /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1140;
+				LastUpgradeCheck = 1200;
 				ORGANIZATIONNAME = "kishikawa katsumi";
 				TargetAttributes = {
 					14796A461C1CD9A500169D09 = {
@@ -423,7 +423,6 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 14796A791C1CDB8A00169D09 /* libUICKeyChainStore.xcconfig */;
 			buildSettings = {
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 			};
 			name = Debug;
 		};
@@ -431,7 +430,6 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 14796A791C1CDB8A00169D09 /* libUICKeyChainStore.xcconfig */;
 			buildSettings = {
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 			};
 			name = Release;
 		};
@@ -439,7 +437,6 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 14F2A00B1D8F31A3000B135F /* TestHost.xcconfig */;
 			buildSettings = {
-				CODE_SIGN_IDENTITY = "-";
 			};
 			name = Debug;
 		};
@@ -447,7 +444,6 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 14F2A00B1D8F31A3000B135F /* TestHost.xcconfig */;
 			buildSettings = {
-				CODE_SIGN_IDENTITY = "-";
 			};
 			name = Release;
 		};
@@ -455,9 +451,6 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 143BF28F1C1CD598002BE6B3 /* Debug.xcconfig */;
 			buildSettings = {
-				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
-				TVOS_DEPLOYMENT_TARGET = 9.0;
 			};
 			name = Debug;
 		};
@@ -465,9 +458,6 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 143BF2901C1CD598002BE6B3 /* Release.xcconfig */;
 			buildSettings = {
-				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
-				TVOS_DEPLOYMENT_TARGET = 9.0;
 			};
 			name = Release;
 		};
diff --git a/Lib/UICKeyChainStore.xcodeproj/xcshareddata/xcschemes/TestHost.xcscheme b/Lib/UICKeyChainStore.xcodeproj/xcshareddata/xcschemes/TestHost.xcscheme
index 32a53ae..2678b78 100644
--- a/Lib/UICKeyChainStore.xcodeproj/xcshareddata/xcschemes/TestHost.xcscheme
+++ b/Lib/UICKeyChainStore.xcodeproj/xcshareddata/xcschemes/TestHost.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1140"
+   LastUpgradeVersion = "1200"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/Lib/UICKeyChainStore.xcodeproj/xcshareddata/xcschemes/UICKeyChainStore.xcscheme b/Lib/UICKeyChainStore.xcodeproj/xcshareddata/xcschemes/UICKeyChainStore.xcscheme
index 4d25561..5d35395 100644
--- a/Lib/UICKeyChainStore.xcodeproj/xcshareddata/xcschemes/UICKeyChainStore.xcscheme
+++ b/Lib/UICKeyChainStore.xcodeproj/xcshareddata/xcschemes/UICKeyChainStore.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1140"
+   LastUpgradeVersion = "1200"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/Lib/UICKeyChainStore.xcodeproj/xcshareddata/xcschemes/libUICKeyChainStore.xcscheme b/Lib/UICKeyChainStore.xcodeproj/xcshareddata/xcschemes/libUICKeyChainStore.xcscheme
index 881f373..28a990f 100644
--- a/Lib/UICKeyChainStore.xcodeproj/xcshareddata/xcschemes/libUICKeyChainStore.xcscheme
+++ b/Lib/UICKeyChainStore.xcodeproj/xcshareddata/xcschemes/libUICKeyChainStore.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1140"
+   LastUpgradeVersion = "1200"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/Lib/UICKeyChainStore/Info.plist b/Lib/UICKeyChainStore/Info.plist
index 344518f..51c4067 100644
--- a/Lib/UICKeyChainStore/Info.plist
+++ b/Lib/UICKeyChainStore/Info.plist
@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>2.3.0</string>
+	<string>2.2.1</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
diff --git a/UICKeyChainStore.podspec b/UICKeyChainStore.podspec
index ef619b1..62067ff 100644
--- a/UICKeyChainStore.podspec
+++ b/UICKeyChainStore.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name                  = "UICKeyChainStore"
-  s.version               = "2.3.0"
+  s.version               = "2.2.1"
   s.summary               = "UICKeyChainStore is a simple wrapper for Keychain that works on iOS and OS X. Makes using Keychain APIs as easy as NSUserDefaults."
   s.description           = <<-DESC
                             UICKeyChainStore is a simple wrapper for Keychain that works on iOS and OS X.