diff --git a/oeffi/build.gradle b/oeffi/build.gradle
index 093813c..f39f090 100644
--- a/oeffi/build.gradle
+++ b/oeffi/build.gradle
@@ -27,7 +27,7 @@ dependencies {
 
 android {
     compileSdkVersion 'android-29'
-    buildToolsVersion '28.0.3'
+    buildToolsVersion '29.0.2'
 
     lintOptions {
         abortOnError false