diff --git a/src/Database/PostgreSQL/Simple/FromRow.hs b/src/Database/PostgreSQL/Simple/FromRow.hs
index a448d9a..4f6348f 100644
--- a/src/Database/PostgreSQL/Simple/FromRow.hs
+++ b/src/Database/PostgreSQL/Simple/FromRow.hs
@@ -26,6 +26,7 @@ module Database.PostgreSQL.Simple.FromRow
      , field
      , fieldWith
      , numFieldsRemaining
+     , GFromRow
      ) where
 
 import           Prelude hiding (null)
diff --git a/src/Database/PostgreSQL/Simple/ToRow.hs b/src/Database/PostgreSQL/Simple/ToRow.hs
index 516a384..4bee413 100644
--- a/src/Database/PostgreSQL/Simple/ToRow.hs
+++ b/src/Database/PostgreSQL/Simple/ToRow.hs
@@ -19,6 +19,7 @@
 module Database.PostgreSQL.Simple.ToRow
     (
       ToRow(..)
+    , GToRow
     ) where
 
 import Database.PostgreSQL.Simple.ToField (Action(..), ToField(..))