1 files changed, 1 insertions, 0 deletions
diff --git a/setup.py b/setup.py
index 37c10b345..e23c4fb59 100644
--- a/setup.py
+++ b/setup.py
@@ -51,6 +51,7 @@ requires = [
     'alabaster>=0.7,<0.8',
     'imagesize',
     'requests',
+    'typing',
 ]
 extras_require = {
     # Environment Marker works for wheel 0.24 or later