diff --git a/app/build.gradle b/app/build.gradle
index ccd4795..ad14004 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -8,7 +8,7 @@ android {
     compileSdkVersion 29
     defaultConfig {
         applicationId "com.argyleexample"
-        minSdkVersion 19
+        minSdkVersion 21
         targetSdkVersion 29
         versionCode 1
         versionName "1.0"
@@ -29,7 +29,7 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])
     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.appcompat:appcompat:1.3.0'
     implementation 'androidx.core:core-ktx:1.0.2'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     implementation "androidx.preference:preference-ktx:1.1.0"
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index f1b4245..42bc2b3 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -19,3 +19,5 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+
+-keep class com.argyle.** { *; }
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 4eb9322..f10365a 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,7 +1,7 @@
-#Tue Aug 20 09:32:23 EEST 2019
+#Sun Jul 04 23:14:55 EEST 2021
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
+android.databinding.enableV2=true
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip
-android.databinding.enableV2=true
\ No newline at end of file
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip
diff --git a/gradlew b/gradlew
old mode 100644
new mode 100755