diff --git a/app/build.gradle b/app/build.gradle
index 5abad32..c13e718 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -62,11 +62,11 @@ tasks.whenTaskAdded { task ->
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlinVersion"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlinVersion"
     implementation 'com.github.shadowsocks:plugin:0.1.1'
     testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
 }
 
 ext.abiCodes = ['armeabi-v7a': 1, 'arm64-v8a': 2, x86: 3]
diff --git a/build.gradle b/build.gradle
index 09c395e..a859c34 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ apply plugin: 'com.github.ben-manes.versions'
 
 buildscript {
     ext {
-        kotlinVersion = '1.2.31'
+        kotlinVersion = '1.2.41'
         minSdkVersion = 21
         sdkVersion = 27
     }
@@ -13,7 +13,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.1'
+        classpath 'com.android.tools.build:gradle:3.1.3'
         classpath 'com.github.ben-manes:gradle-versions-plugin:0.17.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
     }