diff --git a/library/build.gradle b/library/build.gradle
index a88bc730..8ba4a691 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -5,7 +5,7 @@ apply plugin: "maven-publish"
 
 ext
 {
-  appCompatVersion="27.0.1"
+  appCompatVersion="27.0.2"
 }
 
 android
diff --git a/sample/build.gradle b/sample/build.gradle
index e7628eef..ad4526f6 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -2,15 +2,14 @@ apply plugin: 'com.android.application'
 
 android
 {
-  compileSdkVersion 26
-  buildToolsVersion "26.0.2"
+  compileSdkVersion 27
 
   defaultConfig
   {
     applicationId "com.smartnsoft.sample"
 
     minSdkVersion 16
-    targetSdkVersion 26
+    targetSdkVersion 27
 
     versionCode 1
     versionName "1.0"
@@ -29,6 +28,6 @@ android
 
 dependencies
 {
-  implementation ("com.android.support:appcompat-v7:27.0.1")
+  implementation ("com.android.support:appcompat-v7:27.0.2")
   implementation (project(":library"))
 }