diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index f4f91e829336..966334f1e45c 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -1063,7 +1063,7 @@ self: super: {
   });
 
   # dhall-json requires a very particular dhall version
-  dhall-json_1_2_0 = super.dhall-json_1_2_0.override { dhall = self.dhall_1_14_0; };
+  dhall-json_1_2_1 = super.dhall-json_1_2_1.override { dhall = self.dhall_1_14_0; };
 
   # https://github.com/fpco/streaming-commons/issues/49
   streaming-commons = dontCheck super.streaming-commons;