diff --git a/build-constraints.yaml b/build-constraints.yaml
index 226ad5e6..02bf7ceb 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2946,7 +2946,6 @@ expected-test-failures:
     - ghc-events # https://github.com/haskell/ghc-events/issues/9
     - graylog # 0.1.0.1 https://github.com/fpco/stackage/pull/1254
     - haskell-names # 0.7.0 https://github.com/haskell-suite/haskell-names/issues/78
-    - heterocephalus # 1.0.0.1 https://github.com/arowM/heterocephalus/issues/4
     - rematch # No issue tracker, sent e-mail to maintainer https://github.com/fpco/stackage/issues/376
     - xlsior # https://github.com/rcallahan/xlsior/issues/1