diff --git a/webpack.config.js b/webpack.config.js
index e6126a92..0d7fd26c 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -55,5 +55,9 @@ module.exports = {
         stats: {
             colors: true,
         },
+        // Allow server to be accessed from anywhere, which is useful for
+        // testing.  This potentially reveals the source code to the world,
+        // but this should not be a concern for testing open-source software.
+        disableHostCheck: true,
     },
 };