diff --git a/build-constraints.yaml b/build-constraints.yaml
index cc999911..7ac276ed 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8055,6 +8055,9 @@ packages:
         - ghc-typelits-natnormalise < 0.8.0
         - ghc-typelits-knownnat < 0.8.0
 
+        # https://github.com/commercialhaskell/stackage/issues/7846
+        - unicode-data < 0.7
+
     # end of Stackage upper bounds
 # end of packages