diff --git a/NOTICE b/NOTICE
index 642faa2d3a..087f7b0616 100644
--- a/NOTICE
+++ b/NOTICE
@@ -1,4 +1,4 @@
-Copyright 2011-2020 Dropbox, Inc., Kandra Labs, Inc., and contributors
+Copyright 2012–2015 Dropbox, Inc., 2015–2021 Kandra Labs, Inc., and contributors
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this project except in compliance with the License.
diff --git a/docs/THIRDPARTY b/docs/THIRDPARTY
index bd11f050f6..3dc0414c9c 100644
--- a/docs/THIRDPARTY
+++ b/docs/THIRDPARTY
@@ -17,7 +17,7 @@ Comment:
  information or errors found in these notices.
 
 Files: *
-Copyright: 2011-2015 Dropbox, Inc., 2015-2019 Kandra Labs, Inc., and contributors
+Copyright: 2012–2015 Dropbox, Inc., 2015–2021 Kandra Labs, Inc., and contributors
 License: Apache-2.0
 
 Files: confirmation/*
diff --git a/docs/conf.py b/docs/conf.py
index 07c39b9154..b37801fa74 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -44,7 +44,7 @@ master_doc = 'index'
 
 # General information about the project.
 project = 'Zulip'
-copyright = '2015–2020, The Zulip Team'
+copyright = '2012–2015 Dropbox, Inc., 2015–2021 Kandra Labs, Inc., and contributors'
 author = 'The Zulip Team'
 
 # The version info for the project you're documenting, acts as replacement for