diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 01ba479..9e937e7 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -20,13 +20,13 @@ you are exeriencing.
 - Cone your fork
   `git clone git@github.com:your-username/mas.git`
 - Create a topic branch from where you want to base your work.
-  - This is usually the `master` branch.
-  - To quickly create a topic branch based on `master`, run
-     `git checkout -b awesome-feature master`
-  - Please avoid working [directly on the master branch](https://softwareengineering.stackexchange.com/questions/223400/when-should-i-stop-committing-to-master-on-new-projects).
+  - This is usually the `main` branch.
+  - To quickly create a topic branch based on `main`, run
+     `git checkout -b awesome-feature main`
+  - Please avoid working [directly on the main branch](https://softwareengineering.stackexchange.com/questions/223400/when-should-i-stop-committing-to-master-on-new-projects).
   - Make commits of logical units.
 - Run script/format before committing your changes. Fix anything that isn't automatically fixed by the linters.
-- Push your topic branch to your fork and [submit a pull request](https://github.com/mas-cli/mas/compare/master...your-username:topic-branch).
+- Push your topic branch to your fork and [submit a pull request](https://github.com/mas-cli/mas/compare/main...your-username:topic-branch).
 
 Some things that will increase the chance that your pull request is accepted:
 
@@ -50,7 +50,7 @@ to this project, but must remain an owner. By becoming a contributor, you agree
 
 ## Branching and Releases
 
-- This project follows [trunk-based development](https://trunkbaseddevelopment.com/), where `master` is our trunk.
+- This project follows [trunk-based development](https://trunkbaseddevelopment.com/), where `main` is our trunk.
 - Release commits will be tagged in the format: `v1.2.3`.
 - Once releases are tagged, high-level release notes are published on the
 [releases](https://github.com/mas-cli/mas/releases) page.
diff --git a/Dangerfile b/Dangerfile
index 41045fc..f58d0ea 100644
--- a/Dangerfile
+++ b/Dangerfile
@@ -35,6 +35,6 @@ warn(":construction: PR is classed as Work in Progress") if github.pr_title.incl
 # Warn when there is a big PR
 warn(":dizzy_face: Big PR") if git.lines_of_code > 500
 
-# Don't let testing shortcuts get into master by accident
+# Don't let testing shortcuts get into main by accident
 #fail("fdescribe left in tests") if `grep -r fdescribe Tests/ `.length > 1
 #fail("fit left in tests") if `grep -r fit Tests/ `.length > 1
diff --git a/README.md b/README.md
index 99af612..b91f9e3 100644
--- a/README.md
+++ b/README.md
@@ -4,11 +4,11 @@
 
 A simple command line interface for the Mac App Store. Designed for scripting and automation.
 
-[![Software License](https://img.shields.io/badge/license-MIT-lightgrey.svg)](https://github.com/mas-cli/mas/blob/master/LICENSE)
+[![Software License](https://img.shields.io/badge/license-MIT-lightgrey.svg)](https://github.com/mas-cli/mas/blob/main/LICENSE)
 [![Swift 5](https://img.shields.io/badge/Language-Swift_5-orange.svg)](https://swift.org)
 [![GitHub Release](https://img.shields.io/github/release/mas-cli/mas.svg)](https://github.com/mas-cli/mas/releases)
 [![Reviewed by Hound](https://img.shields.io/badge/Reviewed_by-Hound-8E64B0.svg)](https://houndci.com)
-[![Build & Test](https://github.com/mas-cli/mas/actions/workflows/build-test.yml/badge.svg?branch=master)](https://github.com/mas-cli/mas/actions/workflows/build-test.yml?query=branch%3Amaster)
+[![Build & Test](https://github.com/mas-cli/mas/actions/workflows/build-test.yml/badge.svg?branch=main)](https://github.com/mas-cli/mas/actions/workflows/build-test.yml?query=branch%3Amain)
 
 ## 📲 Install
 
diff --git a/docs/style.md b/docs/style.md
index 3e24c3d..e4c48cc 100644
--- a/docs/style.md
+++ b/docs/style.md
@@ -14,7 +14,7 @@
 - Avoid [force unwrapping optionals](https://blog.timac.org/2017/0628-swift-banning-force-unwrapping-optionals/)
 with `!` in production code
   - Production code is what gets shipped with the app. Basically, everything under the
-  [`mas-cli/`](https://github.com/mas-cli/mas/tree/master/mas-cli) folder.
+  [`mas-cli/`](https://github.com/mas-cli/mas/tree/main/mas-cli) folder.
   - However, force unwrapping is **encouraged** in tests for less code and tests
   _should_ break when any expected conditions aren't met.
 - Prefer `struct`s over `class`es wherever possible