diff --git a/oeffi/AndroidManifest.xml b/oeffi/AndroidManifest.xml
index cc9dec8..4ae2671 100644
--- a/oeffi/AndroidManifest.xml
+++ b/oeffi/AndroidManifest.xml
@@ -24,7 +24,7 @@
 
     <uses-sdk
         android:minSdkVersion="16"
-        android:targetSdkVersion="27" />
+        android:targetSdkVersion="28" />
 
     <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 a61d8b4..17e0ae3 100644
--- a/oeffi/build.gradle
+++ b/oeffi/build.gradle
@@ -26,8 +26,8 @@ dependencies {
 }
 
 android {
-    compileSdkVersion 'android-27'
-    buildToolsVersion '27.0.3'
+    compileSdkVersion 'android-28'
+    buildToolsVersion '28.0.3'
 
     lintOptions {
         abortOnError false
diff --git a/oeffi/project.properties b/oeffi/project.properties
index 7c0f563..64784a8 100644
--- a/oeffi/project.properties
+++ b/oeffi/project.properties
@@ -10,4 +10,4 @@
 # Indicates whether an apk should be generated for each density.
 split.density=false
 # Project target.
-target=android-27
+target=android-28