diff --git a/gnu/packages/glicid.scm b/gnu/packages/glicid.scm
index b4f318e..2bf0a37 100644
--- a/gnu/packages/glicid.scm
+++ b/gnu/packages/glicid.scm
@@ -731,6 +731,7 @@
     `(("ruby-asciidoctor" ,ruby-asciidoctor)
 ;      ("ruby-concurrent-ruby" ,ruby-concurrent-ruby)
        ("ruby-concurrent" ,ruby-concurrent)
+       ("ruby-asciidoctor-kroki", ruby-asciidoctor-kroki)
       ("ruby-thread-safe" ,ruby-thread-safe)))
   (synopsis
     "Converts AsciiDoc documents into HTML5 presentations designed to be executed by the reveal.js presentation framework.")