diff --git a/build-constraints.yaml b/build-constraints.yaml
index 63eea931..23f37f1f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5023,6 +5023,9 @@ packages:
       - haskell-lsp-types < 0.23
       - lsp-test < 0.11.0.6
 
+      # https://github.com/commercialhaskell/stackage/issues/5686
+      - formatting < 7
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of