diff --git a/pkgs/development/haskell-modules/configuration-hackage2nix.yaml b/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
index 2c387712592e..4b24f4f53122 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
@@ -2010,6 +2010,7 @@ default-package-overrides:
 
 extra-packages:
   - aeson < 0.8                         # newer versions don't work with GHC 6.12.3
+  - aeson < 1.1                         # required by stack
   - aeson-pretty < 0.8                  # required by elm compiler
   - binary > 0.7 && < 0.8               # binary 0.8.x is the latest, but it's largely unsupported so far
   - Cabal == 1.18.*                     # required for cabal-install et al on old GHC versions