diff --git a/build-constraints.yaml b/build-constraints.yaml
index 98ef17df..0f3ae64a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1860,6 +1860,9 @@ expected-test-failures:
     # https://github.com/barrucadu/dejafu/issues/14
     - dejafu
 
+    # https://github.com/MichaelXavier/cron/issues/22
+    - cron
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4