1 files changed, 1 insertions, 0 deletions
diff --git a/setup.py b/setup.py
index 1eb1d6dd3..5b2c38e8c 100644
--- a/setup.py
+++ b/setup.py
@@ -15,6 +15,7 @@ if sys.version_info < (3, 5):
     sys.exit(1)
 
 install_requires = [
+    'sphinxcontrib-applehelp',
     'sphinxcontrib-devhelp',
     'sphinxcontrib-jsmath',
     'sphinxcontrib-qthelp',