5 files changed, 7 insertions, 0 deletions
diff --git a/src/Language/GraphQL/AST/DirectiveLocation.hs b/src/Language/GraphQL/AST/DirectiveLocation.hs
index 600f931..10da19b 100644
--- a/src/Language/GraphQL/AST/DirectiveLocation.hs
+++ b/src/Language/GraphQL/AST/DirectiveLocation.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoGeneralizedNewtypeDeriving #-}
 {-# LANGUAGE Safe #-}
 
 -- | Various parts of a GraphQL document can be annotated with directives.
diff --git a/src/Language/GraphQL/AST/Document.hs b/src/Language/GraphQL/AST/Document.hs
index 11317d8..4fcdd41 100644
--- a/src/Language/GraphQL/AST/Document.hs
+++ b/src/Language/GraphQL/AST/Document.hs
@@ -3,6 +3,7 @@
 {-# LANGUAGE NamedFieldPuns #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE NoGeneralizedNewtypeDeriving #-}
 {-# LANGUAGE Safe #-}
 
 -- | This module defines an abstract syntax tree for the @GraphQL@ language. It
diff --git a/src/Language/GraphQL/AST/Encoder.hs b/src/Language/GraphQL/AST/Encoder.hs
index 603023b..c26b2e7 100644
--- a/src/Language/GraphQL/AST/Encoder.hs
+++ b/src/Language/GraphQL/AST/Encoder.hs
@@ -2,6 +2,7 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE NoGeneralizedNewtypeDeriving #-}
 {-# LANGUAGE Safe #-}
 
 -- | This module defines a minifier and a printer for the @GraphQL@ language.
diff --git a/src/Language/GraphQL/AST/Lexer.hs b/src/Language/GraphQL/AST/Lexer.hs
index 62cf4d2..123383b 100644
--- a/src/Language/GraphQL/AST/Lexer.hs
+++ b/src/Language/GraphQL/AST/Lexer.hs
@@ -1,5 +1,7 @@
 {-# LANGUAGE ExplicitForAll #-}
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE NoGeneralizedNewtypeDeriving #-}
+{-# LANGUAGE Safe #-}
 
 -- | This module defines a bunch of small parsers used to parse individual
 --   lexemes.
diff --git a/src/Language/GraphQL/AST/Parser.hs b/src/Language/GraphQL/AST/Parser.hs
index d3a6b34..8b03bb2 100644
--- a/src/Language/GraphQL/AST/Parser.hs
+++ b/src/Language/GraphQL/AST/Parser.hs
@@ -2,6 +2,8 @@
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE NoGeneralizedNewtypeDeriving #-}
+{-# LANGUAGE Safe #-}
 
 -- | @GraphQL@ document parser.
 module Language.GraphQL.AST.Parser