Update requirements.txt (#159)

wsavran · web-flow · commit db59a74f02f1 · 2021-11-10T14:38:44.000-08:00
diff --git a/requirements.txt b/requirements.txt
@@ -9,7 +9,7 @@ python-dateutil
 pytest
 vcrpy
 pytest-cov
-sphinx
+sphinx == 4.2.0
 sphinx-gallery
 sphinx-rtd-theme
-pillow
+pillow
