diff --git a/build-constraints.yaml b/build-constraints.yaml
index d9fe6c3f..da9a4bde 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4213,6 +4213,7 @@ expected-test-failures:
     - makefile
 
     # Doctest failures
+    - bugsnag-haskell # https://github.com/pbrisbin/bugsnag-haskell/issues/42
 
     # Misc.
     - HTTP # e.g. "ERROR: Network.Socket.connect: <socket: 6>: unsupported operation (Cannot assign requested address)", I'm not sure if this is a build server issue...