diff --git a/OneSignalSDK/onesignal/otel/consumer-rules.pro b/OneSignalSDK/onesignal/otel/consumer-rules.pro
index e69de29bb..cc7ed1216 100644
--- a/OneSignalSDK/onesignal/otel/consumer-rules.pro
+++ b/OneSignalSDK/onesignal/otel/consumer-rules.pro
@@ -0,0 +1,3 @@
+# OpenTelemetry OTLP exporter references Jackson core classes that are optional on Android.
+# Suppress R8 missing-class errors when apps don't include jackson-core.
+-dontwarn com.fasterxml.jackson.core.**