diff --git a/SimplePDF.xcodeproj/project.pbxproj b/SimplePDF.xcodeproj/project.pbxproj
index fdf3711..d356754 100644
--- a/SimplePDF.xcodeproj/project.pbxproj
+++ b/SimplePDF.xcodeproj/project.pbxproj
@@ -154,11 +154,11 @@
 				TargetAttributes = {
 					A07943F71C4B5E5F000ADEFC = {
 						CreatedOnToolsVersion = 7.2;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = "";
 					};
 					A07944011C4B5E5F000ADEFC = {
 						CreatedOnToolsVersion = 7.2;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = "";
 					};
 				};
 			};
@@ -167,6 +167,7 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
+				English,
 				en,
 			);
 			mainGroup = A07943EE1C4B5E5F000ADEFC;
@@ -351,7 +352,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -371,7 +372,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -386,7 +387,7 @@
 				SWIFT_OBJC_BRIDGING_HEADER = "";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -400,7 +401,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};