diff --git a/build-constraints.yaml b/build-constraints.yaml
index 9c538278..a9bced4c 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7543,6 +7543,7 @@ expected-test-failures:
     - safe-decimal
     - simple-affine-space
     - simple-vec3 # https://github.com/commercialhaskell/stackage/pull/5410
+    - singletons-base
     - sized
     - spatial-math
     - subcategories