diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+1.7.7
+
+* Build against `dhall-1.39.0`
+
 1.7.6
 
 * [Fix `hashable`-related test failures](https://github.com/dhall-lang/dhall-haskell/pull/2152)
diff --git a/dhall-json.cabal b/dhall-json.cabal
--- a/dhall-json.cabal
+++ b/dhall-json.cabal
@@ -1,5 +1,5 @@
 Name: dhall-json
-Version: 1.7.6
+Version: 1.7.7
 Cabal-Version: >=1.10
 Build-Type: Simple
 Tested-With: GHC == 8.4.3, GHC == 8.6.1
@@ -44,7 +44,7 @@
         aeson-yaml                >= 1.1.0     && < 1.2 ,
         bytestring                                < 0.12,
         containers                >= 0.5.9     && < 0.7 ,
-        dhall                     >= 1.38.0    && < 1.39,
+        dhall                     >= 1.39.0    && < 1.40,
         exceptions                >= 0.8.3     && < 0.11,
         filepath                                  < 1.5 ,
         lens-family-core          >= 1.0.0     && < 2.2 ,
diff --git a/src/Dhall/JSON.hs b/src/Dhall/JSON.hs
--- a/src/Dhall/JSON.hs
+++ b/src/Dhall/JSON.hs
@@ -1040,8 +1040,8 @@
           where
             a' = loop a
 
-        Core.Equivalent a b ->
-            Core.Equivalent a' b'
+        Core.Equivalent cs a b ->
+            Core.Equivalent cs a' b'
           where
             a' = loop a
             b' = loop b