diff --git a/build-constraints.yaml b/build-constraints.yaml
index 948da9b7..f82e3218 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3396,6 +3396,10 @@ packages:
     "Václav Haisman <vhaisman@gmail.com> @wilx":
         - hs-bibutils
 
+    "Christian Kjær Laustsen <ckl@codetalk.io> @tehnix":
+        - ghc-core
+        - colorize-haskell
+
     # If you stop maintaining a package you can move it here.
     # It will then be disabled if it starts causing problems.
     # See https://github.com/fpco/stackage/issues/1056