diff --git a/build-constraints.yaml b/build-constraints.yaml
index 03927292..2abcd11d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4726,6 +4726,9 @@ packages:
         # https://github.com/commercialhaskell/stackage/issues/4702
         - generic-lens < 1.2.0.0
 
+        # https://github.com/commercialhaskell/stackage/issues/4703
+        - tomland < 1.1.0.0
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of