diff --git a/build-constraints.yaml b/build-constraints.yaml
index 83d402df..623543c2 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5320,6 +5320,7 @@ expected-test-failures:
     - loopbreaker # https://github.com/polysemy-research/loopbreaker/issues/10
     - nettle # https://github.com/stbuehler/haskell-nettle/issues/10
     - persistent-sqlite # https://github.com/yesodweb/persistent/issues/989
+    - haskell-src-exts # https://github.com/commercialhaskell/stackage/issues/5151
 
     # Compilation failures
     - ListLike # No issue tracker, e-mail sent to maintainer