diff --git a/.github/workflows/deploy-to-web.yml b/.github/workflows/deploy-to-web.yml
index 9c970110..211520a6 100644
--- a/.github/workflows/deploy-to-web.yml
+++ b/.github/workflows/deploy-to-web.yml
@@ -28,7 +28,7 @@ jobs:
           ruby-version: '2.7' 
 
       - name: Install AsciiDoctor
-        run: gem install asciidoctor
+        run: gem install asciidoctor pygments.rb
 
       - name: Clean the build directory 
         run: rm -rf build/*