diff --git a/build-constraints.yaml b/build-constraints.yaml
index a63d9232..ed2cf609 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3099,6 +3099,9 @@ expected-test-failures:
 
     # https://github.com/phadej/servant-swagger-ui/issues/13
     - servant-swagger-ui
+
+    # https://github.com/athanclark/wai-middleware-content-type/issues/2
+    - wai-middleware-content-type
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run