diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index 0a245be77..25ab1b0b8 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -1,13 +1,12 @@
-**Related Issue(s):** 
+**Related Issue(s):**
 
 - #
 
 **Description:**
 
-
 **PR Checklist:**
 
-- [ ] Code is formatted and linted (run `pre-commit run --all-files`)
+- [ ] `pre-commit` hooks pass locally
 - [ ] Tests pass (run `make test`)
 - [ ] Documentation has been updated to reflect changes, if applicable, and docs build successfully (run `make docs`)
-- [ ] Changes are added to the [CHANGELOG](https://github.com/stac-utils/stac-fastapi/blob/master/CHANGES.md).
+- [ ] Changes are added to the [CHANGELOG](https://github.com/stac-utils/stac-fastapi/blob/main/CHANGES.md).
diff --git a/.github/workflows/cicd.yaml b/.github/workflows/cicd.yaml
index 9bad92ba9..6f4eaddc9 100644
--- a/.github/workflows/cicd.yaml
+++ b/.github/workflows/cicd.yaml
@@ -1,9 +1,9 @@
 name: stac-fastapi
 on:
   push:
-    branches: [master]
+    branches: [main]
   pull_request:
-    branches: [master]
+    branches: [main]
 
 jobs:
   test:
diff --git a/.github/workflows/deploy_mkdocs.yml b/.github/workflows/deploy_mkdocs.yml
index 00aa6ddd7..546718aab 100644
--- a/.github/workflows/deploy_mkdocs.yml
+++ b/.github/workflows/deploy_mkdocs.yml
@@ -3,13 +3,13 @@ name: Publish docs via GitHub Pages
 on:
   push:
     branches:
-      - master
+      - main
     paths:
       # Rebuild website when docs have changed or code has changed
-      - 'README.md'
-      - 'docs/**'
-      - 'mkdocs.yml'
-      - '**.py'
+      - "README.md"
+      - "docs/**"
+      - "mkdocs.yml"
+      - "**.py"
 
 jobs:
   build:
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Checkout master
+      - name: Checkout main
         uses: actions/checkout@v3
 
       - name: Set up Python 3.8
diff --git a/.github/workflows/packages.yml b/.github/workflows/packages.yml
index 0724580f9..2267b3077 100644
--- a/.github/workflows/packages.yml
+++ b/.github/workflows/packages.yml
@@ -2,7 +2,7 @@ name: packages
 on:
   push:
     branches:
-      - master
+      - main
     tags:
       - "*"
 
diff --git a/CHANGES.md b/CHANGES.md
index da1f1f230..fd190a4eb 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Changed
+
+* Default branch to **main** ([#544](https://github.com/stac-utils/stac-fastapi/pull/544))
+
 ## [2.4.4] - 2023-03-09
 
 ### Added
@@ -241,7 +245,7 @@
 
 * First PyPi release!
 
-[Unreleased]: <https://github.com/stac-utils/stac-fastapi/compare/2.4.4..master>
+[Unreleased]: <https://github.com/stac-utils/stac-fastapi/compare/2.4.4..main>
 [2.4.4]: <https://github.com/stac-utils/stac-fastapi/compare/2.4.3..2.4.4>
 [2.4.3]: <https://github.com/stac-utils/stac-fastapi/compare/2.4.2..2.4.3>
 [2.4.2]: <https://github.com/stac-utils/stac-fastapi/compare/2.4.1..2.4.2>
diff --git a/README.md b/README.md
index 1fc149ee7..a05b50b1d 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@
   <a href="https://pypi.org/project/stac-fastapi" target="_blank">
       <img src="https://img.shields.io/pypi/v/stac-fastapi.api?color=%2334D058&label=pypi%20package" alt="Package version">
   </a>
-  <a href="https://github.com/stac-utils/stac-fastapi/blob/master/LICENSE" target="_blank">
+  <a href="https://github.com/stac-utils/stac-fastapi/blob/main/LICENSE" target="_blank">
       <img src="https://img.shields.io/github/license/stac-utils/stac-fastapi.svg" alt="License">
   </a>
 </p>
@@ -67,11 +67,11 @@ pip install -e stac_fastapi/pgstac
 ### Pre-built Docker images
 
 Pre-built images are available from the [Github Container Registry](https://github.com/stac-utils/stac-fastapi/pkgs/container/stac-fastapi).
-The latest images are tagged with `master-pgstac` and `master-sqlalchemy`.
+The latest images are tagged with `main-pgstac` and `main-sqlalchemy`.
 To pull the image to your local system:
 
 ```shell
-docker pull ghcr.io/stac-utils/stac-fastapi:master-pgstac  # or latest-sqlalchemy
+docker pull ghcr.io/stac-utils/stac-fastapi:main-pgstac  # or main-sqlalchemy
 ```
 
 This repository provides two example [Docker compose](https://docs.docker.com/compose/) files that demonstrate how you might link the pre-built images with a postgres/pgstac database:
diff --git a/stac_fastapi/pgstac/README.md b/stac_fastapi/pgstac/README.md
index 7961ad260..80d7fc89a 100644
--- a/stac_fastapi/pgstac/README.md
+++ b/stac_fastapi/pgstac/README.md
@@ -9,7 +9,7 @@
   <a href="https://pypi.org/project/stac-fastapi" target="_blank">
       <img src="https://img.shields.io/pypi/v/stac-fastapi?color=%2334D058&label=pypi%20package" alt="Package version">
   </a>
-  <a href="https://github.com/stac-utils/stac-fastapi/blob/master/LICENSE" target="_blank">
+  <a href="https://github.com/stac-utils/stac-fastapi/blob/main/LICENSE" target="_blank">
       <img src="https://img.shields.io/github/license/stac-utils/stac-fastapi.svg" alt="Downloads">
   </a>
 </p>