diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b9335b1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+build/
+*.xcuserstate
diff --git a/xcodeproj-format.xcodeproj/project.pbxproj b/xcodeproj-format.xcodeproj/project.pbxproj
index d46eadc..d54d215 100644
--- a/xcodeproj-format.xcodeproj/project.pbxproj
+++ b/xcodeproj-format.xcodeproj/project.pbxproj
@@ -189,6 +189,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CODE_SIGN_STYLE = Automatic;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
 			name = Debug;
@@ -197,6 +198,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CODE_SIGN_STYLE = Automatic;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
 			name = Release;