diff --git a/11_Kotlin/ShoppingKotlin/.gitignore b/11_Kotlin/ShoppingKotlin/.gitignore
index 39fb081..09b993d 100644
--- a/11_Kotlin/ShoppingKotlin/.gitignore
+++ b/11_Kotlin/ShoppingKotlin/.gitignore
@@ -1,8 +1,7 @@
 *.iml
 .gradle
 /local.properties
-/.idea/workspace.xml
-/.idea/libraries
+/.idea
 .DS_Store
 /build
 /captures
diff --git a/11_Kotlin/ShoppingKotlin/app/build.gradle b/11_Kotlin/ShoppingKotlin/app/build.gradle
index 602d018..76bfa15 100644
--- a/11_Kotlin/ShoppingKotlin/app/build.gradle
+++ b/11_Kotlin/ShoppingKotlin/app/build.gradle
@@ -20,23 +20,15 @@ android {
     }
 }
 
-repositories {
-    mavenCentral()
-    google()
-}
-
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
-        exclude group: 'com.android.support', module: 'support-annotations'
-    })
-    testCompile 'junit:junit:4.12'
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
 
-    compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 
-    compile 'com.android.support:appcompat-v7:27.0.2'
-    compile "com.android.support:recyclerview-v7:27.0.2"
-    compile "com.android.support:design:27.0.2"
+    def supportLibraryVersion = "27.1.1"
+    implementation "com.android.support:appcompat-v7:$supportLibraryVersion"
+    implementation "com.android.support:recyclerview-v7:$supportLibraryVersion"
+    implementation "com.android.support:design:$supportLibraryVersion"
 
-    compile 'com.android.support.constraint:constraint-layout:1.0.2'
+    implementation 'com.android.support.constraint:constraint-layout:1.1.0'
 }
diff --git a/11_Kotlin/ShoppingKotlin/app/src/main/res/layout/content_main.xml b/11_Kotlin/ShoppingKotlin/app/src/main/res/layout/content_main.xml
index 5cd81ef..ac32ff6 100644
--- a/11_Kotlin/ShoppingKotlin/app/src/main/res/layout/content_main.xml
+++ b/11_Kotlin/ShoppingKotlin/app/src/main/res/layout/content_main.xml
@@ -12,7 +12,7 @@
         android:layout_height="0dp"
         android:clipToPadding="false"
         android:padding="4dp"
-        app:layoutManager="LinearLayoutManager"
+        app:layoutManager="android.support.v7.widget.LinearLayoutManager"
         app:layout_behavior="@string/appbar_scrolling_view_behavior"
         app:layout_constraintBottom_toTopOf="@+id/ilName"
         app:layout_constraintLeft_toLeftOf="parent"
diff --git a/11_Kotlin/ShoppingKotlin/build.gradle b/11_Kotlin/ShoppingKotlin/build.gradle
index d6522c6..1f6fd0f 100644
--- a/11_Kotlin/ShoppingKotlin/build.gradle
+++ b/11_Kotlin/ShoppingKotlin/build.gradle
@@ -1,21 +1,20 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.2.0'
+    ext.kotlin_version = '1.2.41'
     repositories {
+        google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.1.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
     }
 }
 
 allprojects {
     repositories {
+        google()
         jcenter()
     }
 }
diff --git a/11_Kotlin/ShoppingKotlin/gradle/wrapper/gradle-wrapper.properties b/11_Kotlin/ShoppingKotlin/gradle/wrapper/gradle-wrapper.properties
index 383ea72..a140e79 100644
--- a/11_Kotlin/ShoppingKotlin/gradle/wrapper/gradle-wrapper.properties
+++ b/11_Kotlin/ShoppingKotlin/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Tue Dec 05 13:58:51 CET 2017
+#Sun May 13 18:33:14 CEST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip