diff --git a/build-constraints.yaml b/build-constraints.yaml
index 70000644..9a67cbb5 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7328,6 +7328,9 @@ packages:
 
         # https://github.com/commercialhaskell/stackage/issues/6748
         - postgresql-simple < 0.6.5
+
+        # https://github.com/commercialhaskell/stackage/issues/6751
+        - MonadRandom < 0.6
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of