diff --git a/.idea/misc.xml b/.idea/misc.xml
index 37a7509..7bfef59 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/build.gradle b/app/build.gradle
index 4166002..f86311a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -20,19 +20,23 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
 }
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'androidx.appcompat:appcompat:1.1.0-alpha05'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.appcompat:appcompat:1.1.0-rc1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta2'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test:runner:1.2.0-beta01'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0-beta01'
     implementation 'org.jsoup:jsoup:1.11.3'
     implementation 'androidx.cardview:cardview:1.0.0'
-    implementation 'androidx.recyclerview:recyclerview:1.1.0-alpha05'
-    implementation 'com.google.android.material:material:1.1.0-alpha06'
+    implementation 'androidx.recyclerview:recyclerview:1.1.0-beta01'
+    implementation 'com.google.android.material:material:1.1.0-alpha08'
     implementation 'com.android.support:customtabs:28.0.0'
 
 //    implementation 'androidx.core:core-ktx:1.0.2'
diff --git a/app/src/main/res/layout/plan.xml b/app/src/main/res/layout/plan.xml
index cc96cd0..074afda 100644
--- a/app/src/main/res/layout/plan.xml
+++ b/app/src/main/res/layout/plan.xml
@@ -50,4 +50,5 @@
 
     </LinearLayout>
 
-</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
\ No newline at end of file
+</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+