diff --git a/dhall-nix.cabal b/dhall-nix.cabal
--- a/dhall-nix.cabal
+++ b/dhall-nix.cabal
@@ -1,5 +1,5 @@
 Name: dhall-nix
-Version: 1.0.8
+Version: 1.0.9
 Cabal-Version: >=1.8.0.2
 Build-Type: Simple
 Tested-With: GHC == 8.0.1
@@ -30,10 +30,11 @@
         base               >= 4.8.0.0  && < 5   ,
         containers                        < 0.6 ,
         data-fix                          < 0.3 ,
-        dhall              >= 1.5.0    && < 1.8 ,
+        dhall              >= 1.5.0    && < 1.9 ,
         hnix               >= 0.3.4    && < 0.4 ,
         neat-interpolation                < 0.4 ,
         text               >= 0.8.0.0  && < 1.3 ,
+        text-format                       < 0.4 ,
         vector             >= 0.3      && < 0.13
     Exposed-Modules:
         Dhall.Nix
@@ -43,11 +44,11 @@
     Hs-Source-Dirs: exec
     Main-Is: Main.hs
     Build-Depends:
-        base             >= 4       && < 5  ,
-        dhall            >= 1.5.0   && < 1.8,
+        base                                ,
+        dhall                               ,
         dhall-nix                           ,
-        hnix             >= 0.3.4   && < 0.4,
+        hnix                                ,
         optparse-generic >= 1.1.1   && < 1.3,
-        text             >= 0.8.0.0 && < 1.3,
+        text                                ,
         trifecta         >= 1.0     && < 1.8
     GHC-Options: -Wall
diff --git a/src/Dhall/Nix.hs b/src/Dhall/Nix.hs
--- a/src/Dhall/Nix.hs
+++ b/src/Dhall/Nix.hs
@@ -111,6 +111,7 @@
 
 import qualified Data.Map
 import qualified Data.Text
+import qualified Data.Text.Buildable
 import qualified Data.Text.Lazy
 import qualified Data.Text.Lazy.Builder
 import qualified Data.Vector
@@ -178,7 +179,10 @@
 Nix
 |]
       where
-        txt = Data.Text.Lazy.toStrict (Dhall.Core.pretty v)
+        builder = Data.Text.Buildable.build v
+
+        txt =
+            Data.Text.Lazy.toStrict (Data.Text.Lazy.Builder.toLazyText builder)
     show (NoDoubles n) =
         Data.Text.unpack [NeatInterpolation.text|
 $_ERROR: No doubles