diff --git a/src/build123d/__init__.py b/src/build123d/__init__.py
index ff9d12a6..fe135f9f 100644
--- a/src/build123d/__init__.py
+++ b/src/build123d/__init__.py
@@ -53,6 +53,7 @@
     "PageSize",
     "PositionMode",
     "RotationOrder",
+    "RotationOrderExtrinsic",
     "Select",
     "Side",
     "SortBy",