diff --git a/.swift-version b/.swift-version
deleted file mode 100644
index 9f55b2c..0000000
--- a/.swift-version
+++ /dev/null
@@ -1 +0,0 @@
-3.0
diff --git a/Device.podspec b/Device.podspec
index b49e699..94318c4 100644
--- a/Device.podspec
+++ b/Device.podspec
@@ -16,5 +16,7 @@ Pod::Spec.new do |s|
   s.requires_arc            = true
   s.source_files            = "Source/*.swift"
   s.ios.source_files        = "Source/iOS/*.swift"
-  s.osx.source_files        = "Source/macOS/*.swift"  
+  s.osx.source_files        = "Source/macOS/*.swift"
+
+  s.swift_version = '5.0' 
 end
diff --git a/Device.xcodeproj/project.pbxproj b/Device.xcodeproj/project.pbxproj
index 9c651ef..4a985ab 100644
--- a/Device.xcodeproj/project.pbxproj
+++ b/Device.xcodeproj/project.pbxproj
@@ -597,6 +597,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = Ekhoo.Device;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -647,6 +648,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = Ekhoo.Device;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_VERSION = 5.0;
 				VALIDATE_PRODUCT = YES;
 			};
 			name = Release;