diff --git a/lecture/minsik/mentoring/MentoringWeatherAPI/.gitignore b/lecture/minsik/mentoring/MentoringWeatherAPI/.gitignore
new file mode 100644
index 0000000..5bd0ce0
--- /dev/null
+++ b/lecture/minsik/mentoring/MentoringWeatherAPI/.gitignore
@@ -0,0 +1,2 @@
+*.xcconfig
+
diff --git a/lecture/minsik/mentoring/MentoringWeatherAPI/Clima.xcodeproj/project.pbxproj b/lecture/minsik/mentoring/MentoringWeatherAPI/Clima.xcodeproj/project.pbxproj
index c0b0ed1..89c4dbc 100644
--- a/lecture/minsik/mentoring/MentoringWeatherAPI/Clima.xcodeproj/project.pbxproj
+++ b/lecture/minsik/mentoring/MentoringWeatherAPI/Clima.xcodeproj/project.pbxproj
@@ -25,6 +25,7 @@
 		A45696542A330A480062BD12 /* WeatherManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WeatherManager.swift; sourceTree = "<group>"; };
 		A4AD65F82A4AD4390039746B /* WeatherData.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WeatherData.swift; sourceTree = "<group>"; };
 		A4AD65FA2A4C21C50039746B /* WeatherModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WeatherModel.swift; sourceTree = "<group>"; };
+		A4BD8A7C2B04BCF70084308A /* Secrets.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = Secrets.xcconfig; path = Model/Secrets.xcconfig; sourceTree = "<group>"; };
 		ADAA27AD231BBFAF00365194 /* Clima.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Clima.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		ADAA27B0231BBFAF00365194 /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
 		ADAA27B2231BBFAF00365194 /* SceneDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SceneDelegate.swift; sourceTree = "<group>"; };
@@ -79,6 +80,7 @@
 		ADAA27AF231BBFAF00365194 /* Clima */ = {
 			isa = PBXGroup;
 			children = (
+				A4BD8A7C2B04BCF70084308A /* Secrets.xcconfig */,
 				ADAA27B0231BBFAF00365194 /* AppDelegate.swift */,
 				ADAA27B2231BBFAF00365194 /* SceneDelegate.swift */,
 				A45696532A330A2E0062BD12 /* Model */,
@@ -330,6 +332,7 @@
 		};
 		ADAA27C2231BBFB300365194 /* Debug */ = {
 			isa = XCBuildConfiguration;
+			baseConfigurationReference = A4BD8A7C2B04BCF70084308A /* Secrets.xcconfig */;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_STYLE = Automatic;
diff --git a/lecture/minsik/mentoring/MentoringWeatherAPI/Clima/Info.plist b/lecture/minsik/mentoring/MentoringWeatherAPI/Clima/Info.plist
index 761d1d7..f6f6e84 100644
--- a/lecture/minsik/mentoring/MentoringWeatherAPI/Clima/Info.plist
+++ b/lecture/minsik/mentoring/MentoringWeatherAPI/Clima/Info.plist
@@ -2,8 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-	<key>NSLocationWhenInUseUsageDescription</key>
-	<string>We need your location to get the current weather for where you are.</string>
+	<key>API_KEY</key>
+	<string>$(API_KEY)</string>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>$(DEVELOPMENT_LANGUAGE)</string>
 	<key>CFBundleExecutable</key>
@@ -22,6 +22,8 @@
 	<string>1</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
+	<key>NSLocationWhenInUseUsageDescription</key>
+	<string>We need your location to get the current weather for where you are.</string>
 	<key>UIApplicationSceneManifest</key>
 	<dict>
 		<key>UIApplicationSupportsMultipleScenes</key>
diff --git a/lecture/minsik/mentoring/MentoringWeatherAPI/Clima/Model/WeatherManager.swift b/lecture/minsik/mentoring/MentoringWeatherAPI/Clima/Model/WeatherManager.swift
index 54246d9..818bddf 100644
--- a/lecture/minsik/mentoring/MentoringWeatherAPI/Clima/Model/WeatherManager.swift
+++ b/lecture/minsik/mentoring/MentoringWeatherAPI/Clima/Model/WeatherManager.swift
@@ -9,13 +9,20 @@
 import Foundation
 import CoreLocation
 
+
+
 protocol WeatherManagerDelegate {
     func didUpdateWeather(_ weatherManager: Weathermanager, weather: WeatherModel)
     func didFailWithError(error: Error)
 }
 
-struct Weathermanager{
-    let weatherURL = "https://api.openweathermap.org/data/2.5/weather?appid=ecc3373ffe347304fd4ab1e4bbec05b7&units=metric"
+struct Weathermanager {
+    
+    private let apikey = Bundle.main.infoDictionary?["API_KEY"] as! String
+    
+    var weatherURL: String {
+        return "https://api.openweathermap.org/data/2.5/weather?units=metric&appid=\(apikey)"
+    }
     
     var delegate: WeatherManagerDelegate?