diff --git a/build-constraints.yaml b/build-constraints.yaml
index ed242b74..70a3ce02 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5082,6 +5082,9 @@ expected-test-failures:
     # https://github.com/blamario/monoid-subclasses/issues/18
     - monoid-subclasses
 
+    # https://github.com/takenobu-hs/ghci-hexcalc/issues/1
+    - ghci-hexcalc
+
     # doctests for the following packages fail because of ambiguous module
     # names, to be fixed in https://github.com/sol/doctest/pull/218
     - blaze-colonnade