diff --git a/dhall-json/dhall-json.cabal b/dhall-json/dhall-json.cabal
index 6df7c9560..aa1a2f14b 100644
--- a/dhall-json/dhall-json.cabal
+++ b/dhall-json/dhall-json.cabal
@@ -39,7 +39,7 @@ Library
     Build-Depends:
         base                      >= 4.11.0.0  && < 5   ,
         aeson                     >= 1.4.6.0   && < 2.1 ,
-        aeson-pretty                              < 0.9 ,
+        aeson-pretty              >= 0.8.0     && < 0.9 ,
         aeson-yaml                >= 1.1.0     && < 1.2 ,
         bytestring                                < 0.12,
         containers                >= 0.5.9     && < 0.7 ,
diff --git a/dhall-json/dhall-to-json/Main.hs b/dhall-json/dhall-to-json/Main.hs
index 82c19ae9d..afccca408 100644
--- a/dhall-json/dhall-to-json/Main.hs
+++ b/dhall-json/dhall-to-json/Main.hs
@@ -1,5 +1,6 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE RecordWildCards   #-}
+{-# LANGUAGE TypeApplications  #-}
 
 module Main where
 
@@ -12,14 +13,15 @@ import Options.Applicative (Parser, ParserInfo)
 
 import qualified Control.Exception
 import qualified Data.Aeson
-import qualified Data.Aeson.Encode.Pretty
+import qualified Data.Aeson.Text
+import qualified Data.Aeson.Encode.Pretty          as Pretty
 import qualified Data.ByteString.Lazy
-import qualified Data.Text.IO             as Text.IO
+import qualified Data.Text.IO                      as Text.IO
 import qualified Dhall
 import qualified Dhall.JSON
 import qualified GHC.IO.Encoding
-import qualified Options.Applicative      as Options
-import qualified Paths_dhall_json         as Meta
+import qualified Options.Applicative               as Options
+import qualified Paths_dhall_json                  as Meta
 import qualified System.Exit
 import qualified System.IO
 
@@ -123,14 +125,18 @@ main = do
 
         Options {..} ->
             handle $ do
-                let config = Data.Aeson.Encode.Pretty.Config
-                               { Data.Aeson.Encode.Pretty.confIndent = Data.Aeson.Encode.Pretty.Spaces 2
-                               , Data.Aeson.Encode.Pretty.confCompare = compare
-                               , Data.Aeson.Encode.Pretty.confNumFormat = Data.Aeson.Encode.Pretty.Generic
-                               , Data.Aeson.Encode.Pretty.confTrailingNewline = False }
+                let custom scientific =
+                        Data.Aeson.Text.encodeToTextBuilder (Data.Aeson.Number scientific)
+
+                let config = Pretty.Config
+                               { Pretty.confIndent = Pretty.Spaces 2
+                               , Pretty.confCompare = compare
+                               , Pretty.confNumFormat = Pretty.Custom custom
+                               , Pretty.confTrailingNewline = False
+                               }
                 let encode =
                         if pretty
-                        then Data.Aeson.Encode.Pretty.encodePretty' config
+                        then Pretty.encodePretty' config
                         else Data.Aeson.encode
 
                 let explaining = if explain then Dhall.detailed else id