diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
index 88ea3aa..45b5654 100644
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@@ -1,5 +1,8 @@
 <component name="ProjectCodeStyleConfiguration">
   <code_scheme name="Project" version="173">
+    <AndroidXmlCodeStyleSettings>
+      <option name="ARRANGEMENT_SETTINGS_MIGRATED_TO_191" value="true" />
+    </AndroidXmlCodeStyleSettings>
     <JetCodeStyleSettings>
       <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
     </JetCodeStyleSettings>
diff --git a/app/build.gradle b/app/build.gradle
index ccef71c..abee57a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -27,6 +27,9 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
+
+    implementation "androidx.appcompat:appcompat:$rootProject.ext.appcompat_version"
+
     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     testImplementation 'junit:junit:4.12'
     implementation project(path: ':lib')
diff --git a/build.gradle b/build.gradle
index d305d6e..2b1b82b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,4 +1,8 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
+ext{
+    appcompat_version = '1.1.0'
+}
+
 
 buildscript {
     ext.kotlin_version = '1.3.41'
diff --git a/lib/build.gradle b/lib/build.gradle
index 8d77687..d836bf6 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -30,6 +30,9 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
+
+    implementation "androidx.appcompat:appcompat:$rootProject.ext.appcompat_version"
+
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     testImplementation 'junit:junit:4.12'