diff --git a/PanoPainter.xcodeproj/project.pbxproj b/PanoPainter.xcodeproj/project.pbxproj
index cd45577..04bb55c 100644
--- a/PanoPainter.xcodeproj/project.pbxproj
+++ b/PanoPainter.xcodeproj/project.pbxproj
@@ -1730,7 +1730,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
 				INFOPLIST_FILE = PanoQL/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @executable_path/../../Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.omixlab.panopainter.ios.ql;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -1772,7 +1772,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
 				INFOPLIST_FILE = PanoQL/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @executable_path/../../Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.omixlab.panopainter.ios.ql;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -1815,7 +1815,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
 				INFOPLIST_FILE = PanoThumb/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @executable_path/../../Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.omixlab.panopainter.ios.thumb;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -1857,7 +1857,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
 				INFOPLIST_FILE = PanoThumb/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @executable_path/../../Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.omixlab.panopainter.ios.thumb;
 				PRODUCT_NAME = "$(TARGET_NAME)";