diff --git a/build-constraints.yaml b/build-constraints.yaml
index fd13f30d..f617c753 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3964,6 +3964,9 @@ expected-haddock-failures:
     # https://github.com/kuribas/cubicbezier/issues/4
     - cubicbezier
 
+    # https://github.com/pepeiborra/hexml-lens/issues/1
+    - hexml-lens
+
 # end of expected-haddock-failures
 
 # Benchmarks which should not be built. Note that Stackage builds benchmarks but does not run them.