diff --git a/Frameworks/RSParser/ParserData.swift b/Frameworks/RSParser/ParserData.swift
index 5cc1b1ae2..d04588338 100644
--- a/Frameworks/RSParser/ParserData.swift
+++ b/Frameworks/RSParser/ParserData.swift
@@ -10,8 +10,8 @@ import Foundation
 
 @objc public final class ParserData: NSObject {
 
-	public let url: String
-	public let data: Data
+	@objc public let url: String
+	@objc public let data: Data
 
 	public init(url: String, data: Data) {
 
diff --git a/Frameworks/RSParser/RSParser.xcodeproj/project.pbxproj b/Frameworks/RSParser/RSParser.xcodeproj/project.pbxproj
index 03037b923..cdfe99674 100644
--- a/Frameworks/RSParser/RSParser.xcodeproj/project.pbxproj
+++ b/Frameworks/RSParser/RSParser.xcodeproj/project.pbxproj
@@ -474,11 +474,11 @@
 				TargetAttributes = {
 					84FF5F831EFA285800C15A01 = {
 						CreatedOnToolsVersion = 9.0;
-						LastSwiftMigration = 0830;
+						LastSwiftMigration = 0900;
 					};
 					84FF5F8C1EFA285800C15A01 = {
 						CreatedOnToolsVersion = 9.0;
-						LastSwiftMigration = 0830;
+						LastSwiftMigration = 0900;
 					};
 				};
 			};
@@ -680,8 +680,9 @@
 				SDKROOT = macosx;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
 				SWIFT_TREAT_WARNINGS_AS_ERRORS = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -758,8 +759,9 @@
 				RUN_CLANG_STATIC_ANALYZER = YES;
 				SDKROOT = macosx;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
 				SWIFT_TREAT_WARNINGS_AS_ERRORS = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -785,7 +787,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -808,7 +810,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.ranchero.RSParser;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
@@ -824,7 +826,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.ranchero.RSParserTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -839,7 +841,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/../Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.ranchero.RSParserTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};