diff --git a/build-constraints.yaml b/build-constraints.yaml
index 838319f0..796343fb 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2275,6 +2275,9 @@ expected-haddock-failures:
     # https://github.com/iand675/metrics/issues/5
     - metrics
 
+    # https://github.com/fpco/stackage/issues/994
+    - Michelangelo
+
 # end of expected-haddock-failures