diff --git a/build-constraints.yaml b/build-constraints.yaml
index 6b2272d1..bc60c97b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3588,6 +3588,11 @@ packages:
         # https://github.com/commercialhaskell/stackage/issues/3787
         - semigroupoids < 5.3
 
+        # needed by foldl, in turn needed by many others (mono-traversable, 
+        # turtle, etc.)
+        # https://github.com/commercialhaskell/stackage/issues/3828
+        - mwc-random < 0.14
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of