diff --git a/app/build.gradle b/app/build.gradle
index 07f6b67..c7acd9a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -11,8 +11,8 @@ android {
         applicationId "top.itning.yunshuclassschedule"
         minSdkVersion 21
         targetSdkVersion 28
-        versionCode 44
-        versionName "2.3.4"
+        versionCode 45
+        versionName "2.3.5"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         javaCompileOptions {
             annotationProcessorOptions {
@@ -53,7 +53,7 @@ dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
     implementation 'androidx.appcompat:appcompat:1.1.0-alpha01'
     implementation 'androidx.annotation:annotation:1.0.1'
-    implementation 'com.google.android.material:material:1.1.0-alpha02'
+    implementation 'com.google.android.material:material:1.1.0-alpha03'
     implementation 'androidx.gridlayout:gridlayout:1.0.0'
     implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'androidx.preference:preference:1.1.0-alpha02'
diff --git a/build.gradle b/build.gradle
index 560a0e2..622647b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.3.11'
+    ext.kotlin_version = '1.3.20'
     ext.greendao_version = '3.2.2'
 
     repositories {