diff --git a/EqSat/include/Luau/UnionFind.h b/EqSat/include/Luau/UnionFind.h
index e319b5f1..559ee119 100644
--- a/EqSat/include/Luau/UnionFind.h
+++ b/EqSat/include/Luau/UnionFind.h
@@ -18,7 +18,7 @@ struct UnionFind final
 
 private:
     std::vector<Id> parents;
-    std::vector<unsigned int> ranks;
+    std::vector<int> ranks;
 
 private:
     Id canonicalize(Id id) const;