diff --git a/bindings/python/requirements.txt b/bindings/python/requirements.txt
index 87d8284e..f779c03c 100644
--- a/bindings/python/requirements.txt
+++ b/bindings/python/requirements.txt
@@ -2,7 +2,7 @@
 # This file is autogenerated by pip-compile with Python 3.10
 # by the following command:
 #
-#    pip-compile bindings/python/requirements.in
+#    pip-compile --pre bindings/python/requirements.in
 #
-opengeode-core==14.*,>=14.11.0
+opengeode-core==14.*,>=14.12.0rc1
     # via -r bindings/python/requirements.in
diff --git a/src/geode/geosciences/implicit/representation/builder/horizons_stack_builder.cpp b/src/geode/geosciences/implicit/representation/builder/horizons_stack_builder.cpp
index a03f12ab..16457a6b 100644
--- a/src/geode/geosciences/implicit/representation/builder/horizons_stack_builder.cpp
+++ b/src/geode/geosciences/implicit/representation/builder/horizons_stack_builder.cpp
@@ -65,7 +65,7 @@ namespace geode
         detail::copy_horizons( horizons_stack, *this,
             mappings[Horizon< dimension >::component_type_static()] );
         detail::copy_stratigraphic_units( horizons_stack, *this,
-            mappings[Horizon< dimension >::component_type_static()] );
+            mappings[StratigraphicUnit< dimension >::component_type_static()] );
         return mappings;
     }