1 files changed, 1 insertions, 0 deletions

diff --git a/setup.cfg b/setup.cfg
index 8cca6477..4ffb2f5e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -74,6 +74,7 @@ tests =
     pip>=19.1 # For proper file:// URLs support.
 
 docs =
+    # Keep these in sync with docs/requirements.txt
     sphinx
     jaraco.packaging>=6.1
     rst.linker>=1.9