diff --git a/docs/source/pythonapi/model.rst b/docs/source/pythonapi/model.rst
index a6c89be7c..2fc27d40e 100644
--- a/docs/source/pythonapi/model.rst
+++ b/docs/source/pythonapi/model.rst
@@ -30,6 +30,7 @@ Composite Surfaces
    openmc.model.XConeOneSided
    openmc.model.YConeOneSided
    openmc.model.ZConeOneSided
+   openmc.model.Octagon
 
 TRISO Fuel Modeling
 -------------------