diff --git a/src/Text/Pandoc/Options.hs b/src/Text/Pandoc/Options.hs
index d0a76a001..b7a3a4b7b 100644
--- a/src/Text/Pandoc/Options.hs
+++ b/src/Text/Pandoc/Options.hs
@@ -41,6 +41,7 @@ module Text.Pandoc.Options ( Extension(..)
                            , HTMLSlideVariant (..)
                            , EPUBVersion (..)
                            , WriterOptions (..)
+                           , TrackChanges (..)
                            , def
                            , isEnabled
                            ) where