diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index a23edb094..a12f808f2 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
   push:
     branches:
-      - main
+      - master
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
diff --git a/docs/odk-workflows/EditorsWorkflow.md b/docs/odk-workflows/EditorsWorkflow.md
index 2db5b924e..c1466f0d2 100644
--- a/docs/odk-workflows/EditorsWorkflow.md
+++ b/docs/odk-workflows/EditorsWorkflow.md
@@ -24,7 +24,7 @@ Ensure that there is a ticket on your issue tracker that describes the change yo
 In your local environment (e.g. your laptop), make sure you are on the `main` (prev. `master`) branch and ensure that you have all the upstream changes, for example:
 
 ```
-git checkout main
+git checkout master
 git pull
 ```
 
diff --git a/docs/odk-workflows/ManageDocumentation.md b/docs/odk-workflows/ManageDocumentation.md
index bb2f1822f..594c04372 100644
--- a/docs/odk-workflows/ManageDocumentation.md
+++ b/docs/odk-workflows/ManageDocumentation.md
@@ -15,7 +15,7 @@ All the documentation is contained in the `docs` directory, and is managed in _M
 1. Open the `.md` file you want to change in an editor of choice (a simple text editor is often best). _IMPORTANT_: Do not edit any files in the `docs/odk-workflows/` directory. These files are managed by the ODK system and will be overwritten when the repository is upgraded! If you wish to change these files, make an issue on the [ODK issue tracker](https://github.com/INCATools/ontology-development-kit/issues).
 2. Perform the edit and save the file
 3. Commit the file to a branch, and create a pull request as usual. 
-4. If your development team likes your changes, merge the docs into main branch.
+4. If your development team likes your changes, merge the docs into master branch.
 5. Deploy the documentation (see below)
 
 ## Deploy the documentation
diff --git a/docs/odk-workflows/ReleaseWorkflow.md b/docs/odk-workflows/ReleaseWorkflow.md
index e0fcc7f19..43cc16d0f 100644
--- a/docs/odk-workflows/ReleaseWorkflow.md
+++ b/docs/odk-workflows/ReleaseWorkflow.md
@@ -13,8 +13,8 @@ These steps are outlined in detail in the following.
 Preparation:
 
 1. Ensure that all your pull requests are merged into your main (master) branch
-2. Make sure that all changes to main are committed to GitHub (`git status` should say that there are no modified files)
-3. Locally make sure you have the latest changes from main (`git pull`)
+2. Make sure that all changes to master are committed to GitHub (`git status` should say that there are no modified files)
+3. Locally make sure you have the latest changes from master (`git pull`)
 4. Checkout a new branch (e.g. `git checkout -b release-2021-01-01`)
 5. You may or may not want to refresh your imports as part of your release strategy (see [here](UpdateImports.md))
 6. Make sure you have the latest ODK installed by running `docker pull obolibrary/odkfull`
diff --git a/src/ontology/hp-odk.yaml b/src/ontology/hp-odk.yaml
index ca285841e..8b1f7726d 100644
--- a/src/ontology/hp-odk.yaml
+++ b/src/ontology/hp-odk.yaml
@@ -5,6 +5,7 @@ repo: human-phenotype-ontology
 report_fail_on: none
 use_dosdps: TRUE
 dosdp_tools_options: "--obo-prefixes=true --restrict-axioms-to=logical"
+git_main_branch: master
 namespaces: 
   - http://purl.obolibrary.org/obo/HP_
   - http://purl.obolibrary.org/obo/hp