diff --git a/README.md b/README.md
index 3e1b5f61..6c29a516 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,12 @@
-# Puppet::ResourceApi [![TravisCI Build Status](https://travis-ci.org/puppetlabs/puppet-resource_api.svg?branch=master)](https://travis-ci.org/puppetlabs/puppet-resource_api) [![Appveyor Build status](https://ci.appveyor.com/api/projects/status/8o9s1ax0hs8lm5fd/branch/master?svg=true)](https://ci.appveyor.com/project/puppetlabs/puppet-resource-api/branch/master) [![codecov](https://codecov.io/gh/puppetlabs/puppet-resource_api/branch/master/graph/badge.svg)](https://codecov.io/gh/puppetlabs/puppet-resource_api)
+# Puppet::ResourceApi [![TravisCI Build Status](https://travis-ci.org/puppetlabs/puppet-resource_api.svg?branch=main)](https://travis-ci.org/puppetlabs/puppet-resource_api) [![Appveyor Build status](https://ci.appveyor.com/api/projects/status/8o9s1ax0hs8lm5fd/branch/main?svg=true)](https://ci.appveyor.com/project/puppetlabs/puppet-resource-api/branch/main) [![codecov](https://codecov.io/gh/puppetlabs/puppet-resource_api/branch/main/graph/badge.svg)](https://codecov.io/gh/puppetlabs/puppet-resource_api)
 
-This is an implementation of the [Resource API specification](https://github.com/puppetlabs/puppet-specifications/blob/master/language/resource-api/README.md).
+This is an implementation of the [Resource API specification](https://github.com/puppetlabs/puppet-specifications/blob/main/language/resource-api/README.md).
 
 Find a working example of a new-style providers in the [Palo Alto Firewall module](https://github.com/puppetlabs/puppetlabs-panos/):
-* [Type](https://github.com/puppetlabs/puppetlabs-panos/blob/master/lib/puppet/type/panos_address.rb)
-* [Base provider](https://github.com/puppetlabs/puppetlabs-panos/blob/master/lib/puppet/provider/panos_provider.rb)
-* [Actual provider with validation and xml processing](https://github.com/puppetlabs/puppetlabs-panos/blob/master/lib/puppet/provider/panos_address/panos_address.rb)
-* [New unit tests](https://github.com/puppetlabs/puppetlabs-panos/blob/master/spec/unit/puppet/provider/panos_provider_spec.rb) for 100% coverage.
+* [Type](https://github.com/puppetlabs/puppetlabs-panos/blob/main/lib/puppet/type/panos_address.rb)
+* [Base provider](https://github.com/puppetlabs/puppetlabs-panos/blob/main/lib/puppet/provider/panos_provider.rb)
+* [Actual provider with validation and xml processing](https://github.com/puppetlabs/puppetlabs-panos/blob/main/lib/puppet/provider/panos_address/panos_address.rb)
+* [New unit tests](https://github.com/puppetlabs/puppetlabs-panos/blob/main/spec/unit/puppet/provider/panos_provider_spec.rb) for 100% coverage.
 
 ## [Find the full Resource API documentation here](https://puppet.com/docs/puppet/latest/custom_resources.html)
 
diff --git a/docs/hands-on-lab/04-adding-a-new-transport.md b/docs/hands-on-lab/04-adding-a-new-transport.md
index 759d41be..165f8ff5 100644
--- a/docs/hands-on-lab/04-adding-a-new-transport.md
+++ b/docs/hands-on-lab/04-adding-a-new-transport.md
@@ -87,7 +87,7 @@ david@davids:~/tmp/hue$ git init
 Initialized empty Git repository in ~/tmp/hue/.git/
 david@davids:~/tmp/hue$ git add -A
 david@davids:~/tmp/hue$ git commit -m 'initial commit'
-[master (root-commit) 67951dd] initial commit
+[main (root-commit) 67951dd] initial commit
  26 files changed, 887 insertions(+)
  create mode 100644 .fixtures.yml
  create mode 100644 .gitattributes
diff --git a/docs/hands-on-lab/07-implementing-a-task.md b/docs/hands-on-lab/07-implementing-a-task.md
index bf691f32..3ca4540d 100644
--- a/docs/hands-on-lab/07-implementing-a-task.md
+++ b/docs/hands-on-lab/07-implementing-a-task.md
@@ -84,7 +84,7 @@ I, [2019-06-04T13:43:58.577944 #9390]  INFO -- : Creating symlink from spec/fixt
 david@davids:~/tmp/hue_workshop$
 ```
 
-* `pdk new task` based on https://github.com/puppetlabs/puppetlabs-panos/blob/master/tasks/apikey.rb
+* `pdk new task` based on https://github.com/puppetlabs/puppetlabs-panos/blob/main/tasks/apikey.rb
 
 ```
 david@davids:~/tmp/hue_workshop$ pdk new task alarm
diff --git a/spec/fixtures/test_module/.travis.yml b/spec/fixtures/test_module/.travis.yml
index 81f77dde..667e4bd0 100644
--- a/spec/fixtures/test_module/.travis.yml
+++ b/spec/fixtures/test_module/.travis.yml
@@ -29,7 +29,7 @@ matrix:
       rvm: 2.1.9
 branches:
   only:
-    - master
+    - main
     - /^v\d/
 notifications:
   email: false
diff --git a/spec/fixtures/test_module/metadata.json b/spec/fixtures/test_module/metadata.json
index 78f8047c..a2b80ff7 100644
--- a/spec/fixtures/test_module/metadata.json
+++ b/spec/fixtures/test_module/metadata.json
@@ -24,5 +24,5 @@
   ],
   "pdk-version": "1.7.0.pre (9)",
   "template-url": "file:///opt/puppetlabs/pdk/share/cache/pdk-templates.git",
-  "template-ref": "heads/master-0-gc87eee3"
+  "template-ref": "heads/main-0-gc87eee3"
 }