diff --git a/examples/keys.py.sample b/examples/keys.py.sample
index c3f8d0a..f1166c8 100644
--- a/examples/keys.py.sample
+++ b/examples/keys.py.sample
@@ -5,3 +5,4 @@ misp_url = 'https://<your MISP URL>/'
 misp_key = 'Your MISP auth key' # The MISP auth key can be found on the MISP web interface under the automation section
 misp_verifycert = True
 misp_client_cert = ''
+proofpoint_key = 'Your Proofpoint TAP auth key'