diff --git a/build-constraints.yaml b/build-constraints.yaml
index 2c2f59ba..d6e2a5ff 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3959,9 +3959,6 @@ expected-haddock-failures:
 
     # https://github.com/fpco/stackage/pull/2652
     - haskell-lsp
-
-    # https://github.com/goldfirere/singletons/issues/242
-    - singletons
 # end of expected-haddock-failures
 
 # Benchmarks which should not be built. Note that Stackage builds benchmarks but does not run them.