diff --git a/config/config.h.meson b/config/config.h.meson
index f852bab..0c3bb6d 100644
--- a/config/config.h.meson
+++ b/config/config.h.meson
@@ -34,7 +34,8 @@
 static constexpr auto FIRST_CEREAL_CLASS_VERSION_WITH_UPDATE_TS = "3";
 static constexpr auto FIRST_CEREAL_CLASS_VERSION_WITH_EVENTID = "4";
 static constexpr auto FIRST_CEREAL_CLASS_VERSION_WITH_RESOLUTION = "5";
-static constexpr size_t CLASS_VERSION = 5;
+static constexpr auto FIRST_CEREAL_CLASS_VERSION_WITH_METADATA_DICT = "6";
+static constexpr size_t CLASS_VERSION = 6;
 
 static constexpr bool LG2_COMMIT_DBUS = @lg2_commit_dbus@;
 static constexpr bool LG2_COMMIT_JOURNAL = @lg2_commit_journal@;