diff --git a/docs/source/pythonapi/index.rst b/docs/source/pythonapi/index.rst
index e364452b1..8988cb9c0 100644
--- a/docs/source/pythonapi/index.rst
+++ b/docs/source/pythonapi/index.rst
@@ -373,6 +373,7 @@ Core Classes
     openmc.data.CoherentElastic
     openmc.data.FissionEnergyRelease
     openmc.data.DataLibrary
+    openmc.data.WindowedMultipole
 
 Core Functions
 --------------