diff --git a/brave/README.md b/brave/README.md
index cc514f15..7e9c2d35 100644
--- a/brave/README.md
+++ b/brave/README.md
@@ -15,3 +15,6 @@ reporter = AsyncReporter.builder(URLConnectionSender.create("http://localhost:94
                         .build(SpanBytesEncoder.JSON_V1);
 tracingBuilder.addSpanHandler(ZipkinSpanHandler.create(reporter));
 ```
+
+*Note*: `ZipkinSpanHandler` requires an explicit dependency on
+[io.zipkin.reporter2:zipkin-reporter](../core)