diff --git a/build-constraints.yaml b/build-constraints.yaml
index d740c7a2..8d2386a5 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3275,6 +3275,7 @@ packages:
 
         # https://github.com/fpco/stackage/issues/2594
         - req < 0.3.0
+        - req-conduit < 0.2.0 # because of above
 
 # end of packages