diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 6f544f4ff..00f7fe7f1 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -288,7 +288,10 @@ Monitoring ~/Developer/swift-docc/Sources/SwiftDocC/SwiftDocC.docc for changes..
 ```
 
 And if you navigate to <http://localhost:8080/documentation/swiftdocc> you'll see
-the rendered documentation for `SwiftDocC`.
+the rendered documentation for `SwiftDocC`. If your browser isn't running on
+the same computer as Swift-DocC, you may need to provide the server's public
+host name or IP address (or just `0.0.0.0`) with the `--host` option to allow
+the browser to connect.
 
 ### Using Docker to Test Swift-DocC for Linux