diff --git a/.hlint.yaml b/.hlint.yaml
index f1eba2735..d837e6ad8 100644
--- a/.hlint.yaml
+++ b/.hlint.yaml
@@ -64,7 +64,6 @@
 - ignore: {name: "Use replicate"}
 - ignore: {name: "Use void"}
 - ignore: {name: "Use bimap"}
-- ignore: {name: "Use newtype instead of data"}
 - ignore: {name: "Use elemIndex"}
 - ignore: {name: "Use =="}
 - ignore: {name: "Use lambda-case"}
diff --git a/hledger-lib/other/ledger-parse/Ledger/Parser/Text.hs b/hledger-lib/other/ledger-parse/Ledger/Parser/Text.hs
index 14728fecb..251385ff7 100644
--- a/hledger-lib/other/ledger-parse/Ledger/Parser/Text.hs
+++ b/hledger-lib/other/ledger-parse/Ledger/Parser/Text.hs
@@ -32,7 +32,7 @@ infixl 4 <$!>
 (<$!>) :: TokenParsing m => (a -> b) -> m a -> m b
 f <$!> ma = ($!) <$> pure f <*> ma
 
-data RawJournal = RawJournal [RawEntity]
+newtype RawJournal = RawJournal [RawEntity]
                 deriving (Show, Eq)
 
 data RawEntity = Whitespace String