diff --git a/build-constraints.yaml b/build-constraints.yaml
index 836614fd..7fb7ec63 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8498,6 +8498,9 @@ packages:
 
         # https://github.com/commercialhaskell/stackage/issues/7472
         - file-embed-lzma < 0.1
+
+        # https://github.com/commercialhaskell/stackage/issues/7473
+        - unicode-data < 0.6
     # end of Stackage upper bounds
 # end of packages