diff --git a/build-constraints.yaml b/build-constraints.yaml
index 4f959d9e..693615d4 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -6803,6 +6803,9 @@ packages:
 
       # https://github.com/commercialhaskell/stackage/issues/6401
       - rope-utf16-splay < 0.4
+
+      # https://github.com/commercialhaskell/stackage/issues/6402
+      - yaml < 0.11.7
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of