diff --git a/README.md b/README.md
index 76f3b4e..95b3af9 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,17 @@ For now, add:
 replace git.wow.st/gmp/jni => git.wow.st/whereswaldon/jni v0.0.0-20200620152723-b380472956a0
 ```
 
+Additionally, this package requires a helper JAR archive to function on Android. You can
+generate this jar file with:
+
+```
+javac -target 1.8 -source 1.8 -bootclasspath $ANDROID_HOME/platforms/android-29/android.jar ./android/NotificationHelper.java
+jar cf NotificationHelper.jar ./android/NotificationHelper.class
+```
+
+Place this JAR file in the main package of your Gio application so that it will automatically
+be bundled into your APKs.
+
 See the package documentation of `./notification_manager.go` for usage information.
 
 ## Name