diff --git a/lib/wicked_pdf/wicked_pdf_helper/assets.rb b/lib/wicked_pdf/wicked_pdf_helper/assets.rb
index 17b82a81..78fc273c 100644
--- a/lib/wicked_pdf/wicked_pdf_helper/assets.rb
+++ b/lib/wicked_pdf/wicked_pdf_helper/assets.rb
@@ -232,8 +232,10 @@ def running_in_development?
 
       def webpacker_version
         if defined?(Shakapacker)
+          require 'skakapacker/version'
           Shakapacker::VERSION
         elsif defined?(Webpacker)
+          require 'webpacker/version'
           Webpacker::VERSION
         end
       end