diff --git a/ultraplot/__init__.py b/ultraplot/__init__.py
index 9f382f187..140e9a3b6 100644
--- a/ultraplot/__init__.py
+++ b/ultraplot/__init__.py
@@ -47,6 +47,9 @@
     "Colormap": ("constructor", "Colormap"),
     "Cycle": ("constructor", "Cycle"),
     "Norm": ("constructor", "Norm"),
+    "Locator": ("constructor", "Locator"),
+    "Scale": ("constructor", "Scale"),
+    "Formatter": ("constructor", "Formatter"),
 }