diff --git a/Pandoc.cabal.in b/Pandoc.cabal.in
index 7c3ae71ea..3234201fe 100644
--- a/Pandoc.cabal.in
+++ b/Pandoc.cabal.in
@@ -21,6 +21,7 @@ Exposed-Modules: Text.ParserCombinators.Pandoc,
                  Text.Pandoc.Shared,
                  Text.Pandoc.UTF8,
                  Text.Pandoc.Writers.DefaultHeaders,
+                 Text.Pandoc.Writers.Docbook,
                  Text.Pandoc.Writers.HTML,
                  Text.Pandoc.Writers.Markdown,
                  Text.Pandoc.Writers.LaTeX,