diff --git a/build-constraints.yaml b/build-constraints.yaml
index 777ae6f9..9543dfe9 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1896,6 +1896,9 @@ expected-test-failures:
     # https://github.com/athanclark/pred-trie/issues/1
     - pred-trie
 
+    # https://github.com/peti/language-nix/issues/1
+    - language-nix
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4