diff --git a/.gitignore b/.gitignore
index 55873c0..8c099f5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@ _build/
 .DS_Store
 .env
 bundles
+.idea/
diff --git a/README.rst b/README.rst
index 5adb8d3..20c91b9 100644
--- a/README.rst
+++ b/README.rst
@@ -16,11 +16,11 @@ Introduction
 
 This high level library provides objects that represent Circuit Playground Express and Bluefruit hardware.
 
-.. image :: https://raw.githubusercontent.com/adafruit/Adafruit_CircuitPython_CircuitPlayground/master/docs/_static/circuit_playground_express_small.jpg
+.. image :: https://raw.githubusercontent.com/adafruit/Adafruit_CircuitPython_CircuitPlayground/main/docs/_static/circuit_playground_express_small.jpg
     :target: https://adafruit.com/product/3333
     :alt: Circuit Playground Express
 
-.. image :: https://raw.githubusercontent.com/adafruit/Adafruit_CircuitPython_CircuitPlayground/master/docs/_static/circuit_playground_bluefruit_small.jpg
+.. image :: https://raw.githubusercontent.com/adafruit/Adafruit_CircuitPython_CircuitPlayground/main/docs/_static/circuit_playground_bluefruit_small.jpg
     :target: https://adafruit.com/product/4333
     :alt: Circuit Playground Bluefruit
 
@@ -68,7 +68,7 @@ Contributing
 ============
 
 Contributions are welcome! Please read our `Code of Conduct
-<https://github.com/adafruit/Adafruit_CircuitPython_CircuitPlayground/blob/master/CODE_OF_CONDUCT.md>`_
+<https://github.com/adafruit/Adafruit_CircuitPython_CircuitPlayground/blob/main/CODE_OF_CONDUCT.md>`_
 before contributing to help this project stay welcoming.
 
 Documentation
diff --git a/examples/circuitplayground_play_file.py b/examples/circuitplayground_play_file.py
index 2ffe480..a5f8df2 100644
--- a/examples/circuitplayground_play_file.py
+++ b/examples/circuitplayground_play_file.py
@@ -3,7 +3,7 @@
 
 """THIS EXAMPLE REQUIRES A WAV FILE FROM THE examples FOLDER IN THE
 Adafruit_CircuitPython_CircuitPlayground REPO found at:
-https://github.com/adafruit/Adafruit_CircuitPython_CircuitPlayground/tree/master/examples
+https://github.com/adafruit/Adafruit_CircuitPython_CircuitPlayground/tree/main/examples
 
 Copy the "dip.wav" file to your CIRCUITPY drive.
 
diff --git a/examples/circuitplayground_play_file_buttons.py b/examples/circuitplayground_play_file_buttons.py
index f5efae0..0045ee3 100644
--- a/examples/circuitplayground_play_file_buttons.py
+++ b/examples/circuitplayground_play_file_buttons.py
@@ -3,7 +3,7 @@
 
 """THIS EXAMPLE REQUIRES A WAV FILE FROM THE examples FOLDER IN THE
 Adafruit_CircuitPython_CircuitPlayground REPO found at:
-https://github.com/adafruit/Adafruit_CircuitPython_CircuitPlayground/tree/master/examples
+https://github.com/adafruit/Adafruit_CircuitPython_CircuitPlayground/tree/main/examples
 
 Copy the "dip.wav" and "rise.wav" files to your CIRCUITPY drive.