diff --git a/build-constraints.yaml b/build-constraints.yaml
index e4227d2b..6c28c108 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1705,6 +1705,9 @@ expected-test-failures:
     # https://github.com/jaspervdj/hakyll/issues/364
     - hakyll
 
+    # https://github.com/gibiansky/IHaskell/issues/551
+    - ihaskell
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4