Added an explanatory comment.

1 files changed, 3 insertions, 0 deletions

diff --git a/tasks.py b/tasks.py
index 50eb90ae2..860584b1c 100644
--- a/tasks.py
+++ b/tasks.py
@@ -94,6 +94,9 @@ def release(version):
 
     session = requests.Session()
 
+    # This tells the CDN to delete the cached response for the URL. We do this
+    # so that the Jenkins builders will see the new sdist immediately when they
+    # go to build the wheels.
     response = session.request(
         "PURGE", "https://pypi.python.org/simple/cryptography/"
     )