diff --git a/src/requests/sessions.py b/src/requests/sessions.py
index b387bc36df..ceaeebe320 100644
--- a/src/requests/sessions.py
+++ b/src/requests/sessions.py
@@ -420,6 +420,8 @@ def __init__(self):
         #: presented by the server, and will ignore hostname mismatches and/or
         #: expired certificates, which will make your application vulnerable to
         #: man-in-the-middle (MitM) attacks.
+        #: If verify is set to a string, it must be the path to a CA bundle file
+        #: that will be used to verify the TLS certificate.
         #: Only set this to `False` for testing.
         self.verify = True