diff --git a/docs/src/conf.py b/docs/src/conf.py

index b57272c..03e1527 100644

--- a/docs/src/conf.py

+++ b/docs/src/conf.py

@@ -39,6 +39,7 @@ class Mock(object):

 MOCK_MODULES = [

+    'pymunk._chipmunk',

     # 'pymunk._chipmunk_cffi',

     #'pymunk._chipmunk_cffi_abi',

     #'_chipmunk_cffi',