diff --git a/Shake.hs b/Shake.hs
index bab108106..b29e4c539 100755
--- a/Shake.hs
+++ b/Shake.hs
@@ -319,7 +319,7 @@ main = do
     phony "guideall" $ need [ guideall ]
 
     guideall %> \out -> do
-      need guidepages  -- XXX seems not to work, not rebuilt when a recipe changes 
+      need $ guidepages ++ pandocFilters  -- XXX seems not to work, not rebuilt when a recipe changes 
       liftIO $ writeFile guideall "* toc\n\n"  -- # User Guide\n\n -- TOC style is better without main heading, 
       forM_ guidepages $ \f -> do -- site/csv-import.md, site/account-aliases.md, ...
         cmd Shell ("printf '\\n\\n' >>") guideall :: Action ExitCode