diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 31dd399c5..86630ad49 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -11,20 +11,20 @@ series [How to Contribute to an Open Source Project on GitHub][egghead]
 2.  Run `npm run setup -s` to install dependencies and run validation
 3.  Create a branch for your PR with `git checkout -b pr/your-branch-name`
 
-> Tip: Keep your `master` branch pointing at the original repository and make
+> Tip: Keep your `main` branch pointing at the original repository and make
 > pull requests from branches on your fork. To do this, run:
 >
 > ```
 > git remote add upstream https://github.com/kentcdodds/react-fundamentals.git
 > git fetch upstream
-> git branch --set-upstream-to=upstream/master master
+> git branch --set-upstream-to=upstream/main main
 > ```
 >
 > This will add the original repository as a "remote" called "upstream," Then
-> fetch the git information from that remote, then set your local `master`
-> branch to use the upstream master branch whenever you run `git pull`. Then you
-> can make all of your pull request branches based on this `master` branch.
-> Whenever you want to update your version of `master`, do a regular `git pull`.
+> fetch the git information from that remote, then set your local `main`
+> branch to use the upstream main branch whenever you run `git pull`. Then you
+> can make all of your pull request branches based on this `main` branch.
+> Whenever you want to update your version of `main`, do a regular `git pull`.
 
 ## Help needed
 
diff --git a/README.md b/README.md
index e24847f1b..9245f336b 100644
--- a/README.md
+++ b/README.md
@@ -185,9 +185,9 @@ Thank you! https://kcd.im/rf-ws-feedback
 [build-badge]: https://img.shields.io/travis/kentcdodds/react-fundamentals.svg?style=flat-square&logo=travis
 [build]: https://travis-ci.org/kentcdodds/react-fundamentals
 [license-badge]: https://img.shields.io/badge/license-GPL%203.0%20License-blue.svg?style=flat-square
-[license]: https://github.com/kentcdodds/react-fundamentals/blob/master/LICENSE
+[license]: https://github.com/kentcdodds/react-fundamentals/blob/main/LICENSE
 [coc-badge]: https://img.shields.io/badge/code%20of-conduct-ff69b4.svg?style=flat-square
-[coc]: https://github.com/kentcdodds/react-fundamentals/blob/master/CODE_OF_CONDUCT.md
+[coc]: https://github.com/kentcdodds/react-fundamentals/blob/main/CODE_OF_CONDUCT.md
 [emojis]: https://github.com/kentcdodds/all-contributors#emoji-key
 [all-contributors]: https://github.com/kentcdodds/all-contributors
 [win-path]: https://www.howtogeek.com/118594/how-to-edit-your-system-path-for-easy-command-line-access/
diff --git a/appveyor.yml b/appveyor.yml
index 682000ce0..29c8f3460 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -3,7 +3,7 @@ environment:
     - node_version: 'stable'
 branches:
   only:
-    - master
+    - main
 install:
   - ps: Install-Product node $env:node_version
 test_script: