diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 8cec99e0ce4..2cb95a397c6 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -1072,9 +1072,6 @@ self: super: {
     yaml = self.yaml_0_11_0_0;
   });
 
-  # Break out of "aeson <1.3, temporary <1.3".
-  stack = doJailbreak super.stack;
-
   # https://github.com/pikajude/stylish-cabal/issues/11
   stylish-cabal = super.stylish-cabal.override { hspec = self.hspec_2_4_8; hspec-core = self.hspec-core_2_4_8; };
   hspec_2_4_8 = super.hspec_2_4_8.override { hspec-core = self.hspec-core_2_4_8; hspec-discover = self.hspec-discover_2_4_8; };