diff --git a/build-constraints.yaml b/build-constraints.yaml
index 326adabb..325f344a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2870,10 +2870,10 @@ packages:
     "Tony Day <tonyday567@gmail.com> @tonyday567":
         - numhask
         - numhask-prelude
-        - numhask-range
+        - numhask-range < 0 # https://github.com/commercialhaskell/stackage/issues/3742
         - perf
         - online
-        - chart-unit
+        - chart-unit < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build via numhask-range
 
     "Iphigenia Df <iphydf@gmail.com> @iphydf":
         - data-msgpack