diff --git a/build-constraints.yaml b/build-constraints.yaml
index d0be6812..f16ac465 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1303,6 +1303,9 @@ expected-test-failures:
     # https://github.com/ekmett/linear/issues/75 GHC 7.10
     - linear
 
+    # https://github.com/haskell/haddock/issues/390
+    - haddock-library
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4