diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 2c452c12e620..c81a38a6d942 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -589,6 +589,9 @@ self: super: {
   concraft = markBroken super.concraft;
   concraft-pl = markBroken super.concraft-pl;
 
+  # https://github.com/kawu/crf-chain2-tiers/issues/2
+  crf-chain2-tiers = markBroken super.crf-chain2-tiers;
+
   # Upstream notified by e-mail.
   snowglobe = markBroken super.snowglobe;
   gearbox = markBroken super.gearbox;