diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
index c4dc5b9..d923aa1 100644
Binary files a/.idea/caches/build_file_checksums.ser and b/.idea/caches/build_file_checksums.ser differ
diff --git a/app/build.gradle b/app/build.gradle
index 289f75a..e68691a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -9,7 +9,7 @@ android {
         targetSdkVersion build_versions.targetSdk
         versionCode app_version.versionCode
         versionName app_version.versionName
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
         release {
diff --git a/app/src/androidTest/java/com/king/zxing/app/ExampleInstrumentedTest.java b/app/src/androidTest/java/com/king/zxing/app/ExampleInstrumentedTest.java
index 7aaa60a..8290673 100644
--- a/app/src/androidTest/java/com/king/zxing/app/ExampleInstrumentedTest.java
+++ b/app/src/androidTest/java/com/king/zxing/app/ExampleInstrumentedTest.java
@@ -1,13 +1,14 @@
 package com.king.zxing.app;
 
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static org.junit.Assert.*;
+import androidx.test.InstrumentationRegistry;
+import androidx.test.runner.AndroidJUnit4;
+
+import static org.junit.Assert.assertEquals;
 
 /**
  * Instrumented test, which will execute on an Android device.
diff --git a/lib/build.gradle b/lib/build.gradle
index be23fad..c71305d 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -10,7 +10,7 @@ android {
         versionCode app_version.versionCode
         versionName app_version.versionName
 
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
     }
     buildTypes {
diff --git a/lib/src/androidTest/java/com/king/zxing/ExampleInstrumentedTest.java b/lib/src/androidTest/java/com/king/zxing/ExampleInstrumentedTest.java
index cf1f38c..cdd5ac9 100644
--- a/lib/src/androidTest/java/com/king/zxing/ExampleInstrumentedTest.java
+++ b/lib/src/androidTest/java/com/king/zxing/ExampleInstrumentedTest.java
@@ -1,12 +1,13 @@
 package com.king.zxing;
 
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import androidx.test.InstrumentationRegistry;
+import androidx.test.runner.AndroidJUnit4;
+
 import static org.junit.Assert.*;
 
 /**
diff --git a/versions.gradle b/versions.gradle
index 3d217be..ad01cd3 100644
--- a/versions.gradle
+++ b/versions.gradle
@@ -21,17 +21,17 @@ versions.supportLibrary = "1.0.0+"
 versions.constraintLayout = "1.1.3"
 
 //test
-versions.junit = "4.12"
-versions.runner = "1.0.2"
-versions.rules = "1.0.2"
-versions.espresso = "3.0.2"
+versions.junit = "1.1.0"
+versions.test = "1.2.0"
+versions.runner = "1.2.0"
+versions.espresso = "3.2.0"
 
 //zxing
 versions.zxing = "3.3.3"
 
 versions.easypermissions = "3.0.0"
 
-
+ext.versions = versions
 
 //support
 def support = [:]
@@ -42,9 +42,10 @@ deps.support = support
 
 //test
 def test = [:]
-test.junit = "junit:junit:$versions.junit"
-test.runner = "com.android.support.test:runner:$versions.runner"
-test.espresso = "com.android.support.test.espresso:espresso-core:$versions.espresso"
+test.junit = "androidx.test.ext:junit:$versions.junit"
+test.test = "androidx.test:core:$versions.test"
+test.runner = "androidx.test:runner:$versions.runner"
+test.espresso = "androidx.test.espresso:espresso-core:$versions.espresso"
 deps.test = test
 
 //zxing