diff --git a/Database/ContentIdentifier.hs b/Database/ContentIdentifier.hs
index 9700f4b693..e847c00cce 100644
--- a/Database/ContentIdentifier.hs
+++ b/Database/ContentIdentifier.hs
@@ -6,7 +6,7 @@
  -}
 
 {-# LANGUAGE CPP #-}
-{-# LANGUAGE QuasiQuotes, TypeFamilies, TemplateHaskell #-}
+{-# LANGUAGE QuasiQuotes, TypeFamilies, TypeOperators, TemplateHaskell #-}
 {-# LANGUAGE OverloadedStrings, GADTs, FlexibleContexts, EmptyDataDecls #-}
 {-# LANGUAGE MultiParamTypeClasses, GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE RankNTypes #-}
diff --git a/Database/Export.hs b/Database/Export.hs
index 4e01752d9b..b9d9879da0 100644
--- a/Database/Export.hs
+++ b/Database/Export.hs
@@ -6,7 +6,7 @@
  -}
 
 {-# LANGUAGE CPP #-}
-{-# LANGUAGE QuasiQuotes, TypeFamilies, TemplateHaskell #-}
+{-# LANGUAGE QuasiQuotes, TypeFamilies, TypeOperators, TemplateHaskell #-}
 {-# LANGUAGE OverloadedStrings, GADTs, FlexibleContexts #-}
 {-# LANGUAGE MultiParamTypeClasses, GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE RankNTypes #-}
diff --git a/Database/Keys/SQL.hs b/Database/Keys/SQL.hs
index e190c90ab0..7fea5cf2bb 100644
--- a/Database/Keys/SQL.hs
+++ b/Database/Keys/SQL.hs
@@ -6,7 +6,7 @@
  -}
 
 {-# LANGUAGE CPP #-}
-{-# LANGUAGE QuasiQuotes, TypeFamilies, TemplateHaskell #-}
+{-# LANGUAGE QuasiQuotes, TypeFamilies, TypeOperators, TemplateHaskell #-}
 {-# LANGUAGE OverloadedStrings, GADTs, FlexibleContexts #-}
 {-# LANGUAGE MultiParamTypeClasses, GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE RankNTypes, ScopedTypeVariables #-}