diff --git a/colonnade/src/Colonnade/Encode.hs b/colonnade/src/Colonnade/Encode.hs
index 66a3abe..31b4673 100644
--- a/colonnade/src/Colonnade/Encode.hs
+++ b/colonnade/src/Colonnade/Encode.hs
@@ -80,6 +80,7 @@ module Colonnade.Encode
   , endow
   , discard
   , headersMonoidal
+  , flattenAnnotated
   , uncapAnnotated
   ) where