diff --git a/.github/workflows/dita-ot-build-actions.yml b/.github/workflows/dita-ot-build-actions.yml
index f5fddf7..5193c59 100644
--- a/.github/workflows/dita-ot-build-actions.yml
+++ b/.github/workflows/dita-ot-build-actions.yml
@@ -26,6 +26,9 @@ jobs:
         with:
           build: |
             set -e
+            dita install https://github.com/jason-fox/fox.jason.extend.css/archive/master.zip
+            dita install https://github.com/infotexture/dita-bootstrap/archive/master.zip
+            dita install https://github.com/infotexture/dita-bootstrap.lunr/archive/master.zip
             dita --input=$(pwd)/dita/orange-heart-master.ditamap --format=html5 --verbose --propertyfile=$(pwd)/dita/build.properties -Dargs.input.dir=$(pwd)/dita 2>&1 | tee log.txt