diff --git a/server/build.js b/server/build.js
index 663da9eb..ffb03bc0 100755
--- a/server/build.js
+++ b/server/build.js
@@ -17,9 +17,9 @@ const banner = `
 // common configuration
 const common = {
   banner,
-  minifyWhitespace: true,
-  minifyIdentifiers: true,
-  minifySyntax: true,
+  minifyWhitespace: true, // this is ok in all versions
+  minifyIdentifiers: true, // this requires tfjs 2.8.1 before it can be used safely
+  minifySyntax: true, // this breaks in tfjs 2.8.4
   bundle: true,
   sourcemap: true,
   logLevel: 'error',