diff --git a/beam-core/Database/Beam/Backend/SQL/Row.hs b/beam-core/Database/Beam/Backend/SQL/Row.hs
index 175066c2..3ff9449f 100644
--- a/beam-core/Database/Beam/Backend/SQL/Row.hs
+++ b/beam-core/Database/Beam/Backend/SQL/Row.hs
@@ -13,6 +13,9 @@ module Database.Beam.Backend.SQL.Row
   , ColumnParseError(..), BeamRowReadError(..)
 
   , FromBackendRow(..)
+
+    -- * Exported so we can override defaults
+  , GFromBackendRow(..) -- for 'runSelectReturningList' and co
   ) where
 
 import           Database.Beam.Backend.SQL.Types
diff --git a/beam-core/Database/Beam/Schema/Lenses.hs b/beam-core/Database/Beam/Schema/Lenses.hs
index b46f15ee..41452901 100644
--- a/beam-core/Database/Beam/Schema/Lenses.hs
+++ b/beam-core/Database/Beam/Schema/Lenses.hs
@@ -4,7 +4,12 @@ module Database.Beam.Schema.Lenses
     ( tableLenses
     , TableLens(..)
 
-    , dbLenses ) where
+    , dbLenses
+
+    -- * Exported so we can override defaults
+    , GTableLenses(..)
+    , GDatabaseLenses(..)
+    ) where
 
 import Database.Beam.Schema.Tables
 
diff --git a/beam-core/Database/Beam/Schema/Tables.hs b/beam-core/Database/Beam/Schema/Tables.hs
index ab359ab4..b3447149 100644
--- a/beam-core/Database/Beam/Schema/Tables.hs
+++ b/beam-core/Database/Beam/Schema/Tables.hs
@@ -57,7 +57,20 @@ module Database.Beam.Schema.Tables
     , pk
     , allBeamValues, changeBeamRep
     , alongsideTable
-    , defaultFieldName )
+    , defaultFieldName
+
+    -- * Exported so we can override defaults
+    -- For 'Beamable'
+    , GZipTables(..)
+    , GTableSkeleton(..)
+    -- For 'Database'
+    , GZipDatabase(..)
+    -- for 'defaultDbSettings'
+    , GAutoDbSettings(..)
+    , GDefaultTableFieldSettings(..)
+    , ChooseSubTableStrategy
+    , SubTableStrategyImpl
+    )
     where
 
 import           Database.Beam.Backend.Types