diff --git a/oeffi/AndroidManifest.xml b/oeffi/AndroidManifest.xml
index 6071e6d..80a5d5b 100644
--- a/oeffi/AndroidManifest.xml
+++ b/oeffi/AndroidManifest.xml
@@ -24,7 +24,7 @@
 
     <uses-sdk
         android:minSdkVersion="21"
-        android:targetSdkVersion="30" />
+        android:targetSdkVersion="31" />
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
diff --git a/oeffi/build.gradle b/oeffi/build.gradle
index 71df129..500ab2b 100644
--- a/oeffi/build.gradle
+++ b/oeffi/build.gradle
@@ -30,7 +30,7 @@ dependencies {
 }
 
 android {
-    compileSdkVersion 'android-30'
+    compileSdkVersion 'android-31'
     buildToolsVersion '30.0.3'
 
     defaultConfig {