diff --git a/build-constraints.yaml b/build-constraints.yaml
index ee68ba1a..6295e321 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1304,9 +1304,12 @@ expected-test-failures:
     # https://github.com/ekmett/linear/issues/75 GHC 7.10
     - linear
 
-    # https://github.com/haskell/haddock/issues/390
+    # https://github.com/haskell/haddock/issues/390 GHC 7.10
     - haddock-library
 
+    # https://github.com/ekmett/machines/issues/44 GHC 7.10
+    - machines
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4