diff --git a/doc/makepanda/makepanda.py b/doc/makepanda/makepanda.py
index f38778d0e1..bf7de0d852 100755
--- a/doc/makepanda/makepanda.py
+++ b/doc/makepanda/makepanda.py
@@ -1910,6 +1910,7 @@ if (sys.platform == "win32"):
 CopyFile(PREFIX+"/", "doc/LICENSE")
 CopyFile(PREFIX+"/", "doc/ReleaseNotes")
 CopyTree(PREFIX+'/Pmw', 'thirdparty/Pmw')
+CopyTree(PREFIX+'/epydoc', 'thirdparty/epydoc')
 CopyTree(PREFIX+'/SceneEditor', 'SceneEditor')
 CopyAllFiles(PREFIX+"/plugins/",  "pandatool/src/scripts/", ".mel")
 CopyAllFiles(PREFIX+"/plugins/",  "pandatool/src/scripts/", ".ms")