diff --git a/build-constraints.yaml b/build-constraints.yaml
index d3de5c03..a70feffc 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3837,6 +3837,9 @@ expected-benchmark-failures:
     # wrong package.yaml file
     - teardown # https://github.com/roman/Haskell-teardown/issues/1
 
+    # https://github.com/mrkkrp/req-conduit/issues/4
+    - req-conduit
+
 # end of expected-benchmark-failures