diff --git a/docs/iterutils.rst b/docs/iterutils.rst
index f380e90..146d68c 100644
--- a/docs/iterutils.rst
+++ b/docs/iterutils.rst
@@ -19,6 +19,10 @@ from the standard library.
 .. autofunction:: windowed
 .. autofunction:: windowed_iter
 
+.. autofunction:: backoff_iter
+.. autofunction:: frange
+.. autofunction:: xfrange
+
 Categorization
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