diff --git a/build-constraints.yaml b/build-constraints.yaml
index 27731f03..83b5f6f7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8547,6 +8547,9 @@ packages:
         - HPDF < 1.7
         - boomwhacker < 0.0.2
 
+        # https://github.com/commercialhaskell/stackage/issues/7326
+        - toml-parser < 2
+
     # end of Stackage upper bounds
 # end of packages