diff --git a/src/utils/strong-type.hh b/src/utils/strong-type.hh
index bee18e3..e66a130 100644
--- a/src/utils/strong-type.hh
+++ b/src/utils/strong-type.hh
@@ -11,6 +11,8 @@ struct StrongType {
         return value_;
     }
 
+    auto operator<=>(StrongType<T, Tag> const&) const = default;
+
 private:
     T value_;
 };