diff --git a/lib/highlightjs/building.md b/lib/highlightjs/building.md
index cd5884a946..71ed396aed 100644
--- a/lib/highlightjs/building.md
+++ b/lib/highlightjs/building.md
@@ -22,6 +22,9 @@ languages included. Build it with the following:
     $>  # start in some temp directory
     $>  git clone https://github.com/highlightjs/highlight.js
     $>  cd highlight.js
+    $>  git clone https://github.com/highlightjs/highlightjs-closure-templates
+    $>  ln -s ../../highlightjs-closure-templates/soy.js src/languages/soy.js
+    $>  mkdir test/detect/soy && ln -s ../../../highlightjs-closure-templates/test/detect/soy/default.txt test/detect/soy/default.txt
     $>  npm install
     $>  node tools/build.js -n