diff --git a/LICENSE b/LICENSE
index 2ee3884..1495159 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019 Ram Rachum
+Copyright (c) 2019 Ram Rachum and collaborators
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index f2687a2..af0b8a7 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,7 @@ Use `pip`:
 
 # Copyright #
 
-Copyright (c) 2019 Ram Rachum, released under the MIT license.
+Copyright (c) 2019 Ram Rachum and collaborators, released under the MIT license.
 
 I provide
 [Development services in Python and Django](https://chipmunkdev.com) and I [give Python workshops](http://pythonworkshops.co/) to teach people Python and related topics.
diff --git a/misc/generate_authors.py b/misc/generate_authors.py
index 173a7ed..8adfc53 100644
--- a/misc/generate_authors.py
+++ b/misc/generate_authors.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# Copyright 2019 Ram Rachum.
+# Copyright 2019 Ram Rachum and collaborators.
 # This program is distributed under the MIT license.
 
 
diff --git a/pysnooper/__init__.py b/pysnooper/__init__.py
index eed5c75..ccd3ad0 100644
--- a/pysnooper/__init__.py
+++ b/pysnooper/__init__.py
@@ -1,4 +1,4 @@
-# Copyright 2019 Ram Rachum.
+# Copyright 2019 Ram Rachum and collaborators.
 # This program is distributed under the MIT license.
 
 import future.standard_library
diff --git a/pysnooper/pycompat.py b/pysnooper/pycompat.py
index 7bac236..357c53b 100644
--- a/pysnooper/pycompat.py
+++ b/pysnooper/pycompat.py
@@ -1,4 +1,4 @@
-# Copyright 2019 Ram Rachum.
+# Copyright 2019 Ram Rachum and collaborators.
 # This program is distributed under the MIT license.
 '''Python 2/3 compatibility'''
 
diff --git a/pysnooper/pysnooper.py b/pysnooper/pysnooper.py
index 19139d3..f969aca 100644
--- a/pysnooper/pysnooper.py
+++ b/pysnooper/pysnooper.py
@@ -1,4 +1,4 @@
-# Copyright 2019 Ram Rachum.
+# Copyright 2019 Ram Rachum and collaborators.
 # This program is distributed under the MIT license.
 
 import sys
diff --git a/pysnooper/tracer.py b/pysnooper/tracer.py
index f4860ab..0f4dee5 100644
--- a/pysnooper/tracer.py
+++ b/pysnooper/tracer.py
@@ -1,4 +1,4 @@
-# Copyright 2019 Ram Rachum.
+# Copyright 2019 Ram Rachum and collaborators.
 # This program is distributed under the MIT license.
 
 import types
diff --git a/pysnooper/utils.py b/pysnooper/utils.py
index 78327ce..fc6a89c 100644
--- a/pysnooper/utils.py
+++ b/pysnooper/utils.py
@@ -1,4 +1,4 @@
-# Copyright 2019 Ram Rachum.
+# Copyright 2019 Ram Rachum and collaborators.
 # This program is distributed under the MIT license.
 
 import abc
diff --git a/setup.py b/setup.py
index 2b58575..564ce28 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 """
 Packaging implementation for PySnooper
 
-Copyright 2019 Ram Rachum.
+Copyright 2019 Ram Rachum and collaborators.
 This program is distributed under the MIT license.
 """
 import setuptools
diff --git a/tests/test_pysnooper.py b/tests/test_pysnooper.py
index 27af77d..75021e0 100644
--- a/tests/test_pysnooper.py
+++ b/tests/test_pysnooper.py
@@ -1,4 +1,4 @@
-# Copyright 2019 Ram Rachum.
+# Copyright 2019 Ram Rachum and collaborators.
 # This program is distributed under the MIT license.
 
 import io
diff --git a/tests/utils.py b/tests/utils.py
index 3f27972..fc8242a 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -1,4 +1,4 @@
-# Copyright 2019 Ram Rachum.
+# Copyright 2019 Ram Rachum and collaborators.
 # This program is distributed under the MIT license.
 
 import re