2 files changed, 2 insertions, 0 deletions
diff --git a/src/Language/GraphQL/Type/Definition.hs b/src/Language/GraphQL/Type/Definition.hs
index ad4b538..e3616d1 100644
--- a/src/Language/GraphQL/Type/Definition.hs
+++ b/src/Language/GraphQL/Type/Definition.hs
@@ -3,6 +3,7 @@
    obtain one at https://mozilla.org/MPL/2.0/. -}
 
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE NoGeneralizedNewtypeDeriving #-}
 {-# LANGUAGE Safe #-}
 
 -- | Types that can be used as both input and output types.
diff --git a/src/Language/GraphQL/Type/In.hs b/src/Language/GraphQL/Type/In.hs
index bd78c8c..1fdedf4 100644
--- a/src/Language/GraphQL/Type/In.hs
+++ b/src/Language/GraphQL/Type/In.hs
@@ -3,6 +3,7 @@
    obtain one at https://mozilla.org/MPL/2.0/. -}
 
 {-# LANGUAGE PatternSynonyms #-}
+{-# LANGUAGE NoGeneralizedNewtypeDeriving #-}
 {-# LANGUAGE Safe #-}
 {-# LANGUAGE ViewPatterns #-}