diff --git a/keychain-kit.xcodeproj/project.pbxproj b/keychain-kit.xcodeproj/project.pbxproj
index f862347..0705aa5 100644
--- a/keychain-kit.xcodeproj/project.pbxproj
+++ b/keychain-kit.xcodeproj/project.pbxproj
@@ -302,7 +302,7 @@
 					"@executable_path/Frameworks",
 					"@loader_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.0.0;
+				MARKETING_VERSION = 1.1.0;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.mr-noone.keychain-kit";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
@@ -327,7 +327,7 @@
 					"@executable_path/Frameworks",
 					"@loader_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.0.0;
+				MARKETING_VERSION = 1.1.0;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.mr-noone.keychain-kit";
 				SKIP_INSTALL = YES;
 				SWIFT_VERSION = 5.0;
diff --git a/keychain-kit/Sources/Keychain.swift b/keychain-kit/Sources/Keychain.swift
index 4e50e64..da0291f 100644
--- a/keychain-kit/Sources/Keychain.swift
+++ b/keychain-kit/Sources/Keychain.swift
@@ -46,7 +46,17 @@ public struct Keychain {
   }
   
   public func get(_ key: String) throws -> String {
-    return String(data: try get(key), encoding: .utf8)!
+    guard let value = String(data: try get(key), encoding: .utf8) else {
+      throw Error.unexpectedData
+    }
+    return value
+  }
+  
+  public func get(_ key: String) throws -> UUID {
+    guard let value = UUID(uuidString: try get(key)) else {
+      throw Error.unexpectedData
+    }
+    return value
   }
   
   public func get<T>(_ key: String, decoder: JSONDecoder = JSONDecoder()) throws -> T where T: Decodable {
@@ -70,6 +80,10 @@ public struct Keychain {
     try set(value.data(using: .utf8)!, for: key)
   }
   
+  public func set(_ uuid: UUID, for key: String) throws {
+    try set(uuid.uuidString, for: key)
+  }
+  
   public func set<T>(_ value: T, for key: String, encoder: JSONEncoder = JSONEncoder()) throws where T: Encodable {
     try set(encoder.encode(value), for: key)
   }