diff --git a/tools/actions/commit-queue.sh b/tools/actions/commit-queue.sh
index 309c1c5406b..0df819e47ee 100755
--- a/tools/actions/commit-queue.sh
+++ b/tools/actions/commit-queue.sh
@@ -7,7 +7,7 @@ REPOSITORY=$2
 shift 2
 
 UPSTREAM=origin
-DEFAULT_BRANCH=master
+DEFAULT_BRANCH=main
 
 COMMIT_QUEUE_LABEL="commit-queue"
 COMMIT_QUEUE_FAILED_LABEL="commit-queue-failed"
@@ -86,7 +86,7 @@ for pr in "$@"; do
     commit_title=$(git log -1 --pretty='format:%s')
     commit_body=$(git log -1 --pretty='format:%b')
     commit_head=$(grep 'Fetched commits as' output | cut -d. -f3 | xargs git rev-parse)
- 
+
     jq -n \
       --arg title "${commit_title}" \
       --arg body "${commit_body}" \
diff --git a/tools/doc/apilinks.mjs b/tools/doc/apilinks.mjs
index a1b660f1cfa..749bf7966aa 100644
--- a/tools/doc/apilinks.mjs
+++ b/tools/doc/apilinks.mjs
@@ -41,7 +41,7 @@ const remoteUrl = execSync(`git config remote.${trackingRemote}.url`);
 const repo = (remoteUrl.match(/(\w+\/\w+)\.git\r?\n?$/) ||
              ['', 'nodejs/node'])[1];
 
-const hash = execSync('git log -1 --pretty=%H') || 'master';
+const hash = execSync('git log -1 --pretty=%H') || 'main';
 const tag = execSync(`git describe --contains ${hash}`).split('\n')[0] || hash;
 
 // Extract definitions from each file specified.
diff --git a/tools/doc/html.mjs b/tools/doc/html.mjs
index 1c5ad61182b..1caffa7158c 100644
--- a/tools/doc/html.mjs
+++ b/tools/doc/html.mjs
@@ -522,7 +522,7 @@ function altDocs(filename, docCreated, versions) {
 }
 
 function editOnGitHub(filename) {
-  return `<li class="edit_on_github"><a href="https://github.com/nodejs/node/edit/master/doc/api/${filename}.md">Edit on GitHub</a></li>`;
+  return `<li class="edit_on_github"><a href="https://github.com/nodejs/node/edit/main/doc/api/${filename}.md">Edit on GitHub</a></li>`;
 }
 
 function gtocPicker(id) {
diff --git a/tools/doc/versions.mjs b/tools/doc/versions.mjs
index ec623a2dbd2..8f6c4ef98ad 100644
--- a/tools/doc/versions.mjs
+++ b/tools/doc/versions.mjs
@@ -32,7 +32,7 @@ const outFile = (process.argv.length > 2 ? process.argv[2] : undefined);
 
 async function versions() {
   // The CHANGELOG.md on release branches may not reference newer semver
-  // majors of Node.js so fetch and parse the version from the master branch.
+  // majors of Node.js so fetch and parse the version from the main branch.
   const url =
     'https://raw.githubusercontent.com/nodejs/node/HEAD/CHANGELOG.md';
   let changelog;
diff --git a/tools/lint-pr-url.mjs b/tools/lint-pr-url.mjs
index 0ebbfdd0796..c32473ccb89 100755
--- a/tools/lint-pr-url.mjs
+++ b/tools/lint-pr-url.mjs
@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 // Usage:
-// git diff upstream/master...HEAD -G"pr-url:" -- "*.md" | \
+// git diff upstream/main...HEAD -G"pr-url:" -- "*.md" | \
 // ./tools/lint-pr-url.mjs <expected-pr-url>
 
 import process from 'node:process';
diff --git a/tools/update-npm.sh b/tools/update-npm.sh
index d58b325b77f..f69b6e5b17e 100755
--- a/tools/update-npm.sh
+++ b/tools/update-npm.sh
@@ -49,5 +49,5 @@ echo "Please git add npm, commit the new version, and whitespace-fix:"
 echo ""
 echo "$ git add -A deps/npm"
 echo "$ git commit -m \"deps: upgrade npm to $NPM_VERSION\""
-echo "$ git rebase --whitespace=fix master"
+echo "$ git rebase --whitespace=fix main"
 echo ""