diff --git a/README.rst b/README.rst
index b3950a1..c951275 100644
--- a/README.rst
+++ b/README.rst
@@ -170,7 +170,7 @@ Contributing
 ============
 
 Contributions are welcome! Please read our `Code of Conduct
-<https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k/blob/master/CODE_OF_CONDUCT.md>`_
+<https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k/blob/main/CODE_OF_CONDUCT.md>`_
 before contributing to help this project stay welcoming.
 
 Documentation