diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7359afbf..fd05b4ec 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3984,6 +3984,8 @@ expected-test-failures:
     - hweblib # https://github.com/aycanirican/hweblib/issues/3
     - language-dockerfile # https://github.com/beijaflor-io/haskell-language-dockerfile/issues/8
     - language-lua2 # https://github.com/mitchellwrosen/language-lua2/issues/4
+    - language-nix # https://github.com/fpco/stackage/issues/3607
+    - pcre-heavy # https://github.com/fpco/stackage/issues/3607
     - picosat # https://github.com/fpco/stackage/pull/2382
     - pkcs10 # https://github.com/fcomb/pkcs10-hs/issues/2
     - servant-ruby # https://github.com/fpco/stackage/issues/3600