diff --git a/build-constraints.yaml b/build-constraints.yaml
index 91117867..c94ecd28 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3161,6 +3161,8 @@ expected-test-failures:
     - yesod-auth-basic # https://github.com/creichert/yesod-auth-basic/issues/1
 
     - folds # https://github.com/ekmett/folds/issues/12
+
+    - stm-delay # https://github.com/joeyadams/haskell-stm-delay/issues/5
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run