diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5213f952..f5a5c005 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -6733,6 +6733,7 @@ packages:
       - th-desugar < 1.13
       - eliminators < 0.9
       - ghc-syntax-highlighter < 0.0.8 # requires ghc-lib-parser >= 9.2
+      - ormolu < 0.4.0.0
 
       # https://github.com/commercialhaskell/stackage/issues/6265
       - attoparsec < 0.14.2