diff --git a/build-constraints.yaml b/build-constraints.yaml
index 190380f1..6f4475f5 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4380,6 +4380,10 @@ packages:
         - pandoc < 2.6
         - pandoc-citeproc < 0.16
 
+        # https://github.com/commercialhaskell/stackage/issues/4345
+        - req < 2.0.0
+        - retry < 0.8.0.0
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of