diff --git a/app/build.gradle b/app/build.gradle
index 7e19940..8a0dac9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,13 +1,12 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "22.0.1"
+    compileSdkVersion 27
 
     defaultConfig {
         applicationId "com.blackcj.customkeyboard"
         minSdkVersion 19
-        targetSdkVersion 23
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
     }
@@ -20,7 +19,7 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:23.1.1'
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    testImplementation 'junit:junit:4.12'
+    implementation 'com.android.support:appcompat-v7:27.1.1'
 }