diff --git a/build-constraints.yaml b/build-constraints.yaml
index ce04efac..097e80cf 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8861,6 +8861,7 @@ expected-test-failures:
     - eventful-dynamodb
     - eventful-postgresql
     - faktory # connection refused, https://github.com/commercialhaskell/stackage/issues/5905
+    - filestore # needs mercurial
     - gdax # Needs environment variables set
     - ghc-imported-from # depends on haddocks being generated first https://github.com/fpco/stackage/pull/1315
     - ghc-mod # https://github.com/DanielG/ghc-mod/issues/611