diff --git a/.github/workflows/android.yml b/.github/workflows/android.yml
index c3aa486..74fbbe1 100644
--- a/.github/workflows/android.yml
+++ b/.github/workflows/android.yml
@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     steps:
     - uses: actions/checkout@v2
diff --git a/app/build.gradle b/app/build.gradle
index 62b7a6f..d715325 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,7 +1,7 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 'android-R'
+    compileSdkVersion 30
     defaultConfig {
         applicationId "org.cuberite.android"
         resConfigs "en", "de", "nl", "pt"