diff --git a/build-constraints.yaml b/build-constraints.yaml
index 725a349c..d9ac265f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -6823,6 +6823,9 @@ packages:
       # https://github.com/commercialhaskell/stackage/issues/6312
       - sydtest < 0.6
 
+      # https://github.com/commercialhaskell/stackage/issues/6313
+      - unicode-data < 0.2
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of