6 files changed, 18 insertions, 0 deletions

diff --git a/docs/internal-fs-layout.md b/docs/internal-fs-layout.md
index 3537dfda..e9446ef4 100644
--- a/docs/internal-fs-layout.md
+++ b/docs/internal-fs-layout.md
@@ -1,5 +1,8 @@
 # Repo internal filesystem layout
 
+> **Warning: The "master" branch is no longer used.  Use "main" instead.**<br>
+> https://gerrit.googlesource.com/git-repo/+/HEAD/docs/internal-fs-layout.md
+
 A reference to the `.repo/` tree in repo client checkouts.
 Hopefully it's complete & up-to-date, but who knows!
 
diff --git a/docs/manifest-format.md b/docs/manifest-format.md
index 676e031d..bdb0ee87 100644
--- a/docs/manifest-format.md
+++ b/docs/manifest-format.md
@@ -1,5 +1,8 @@
 # repo Manifest Format
 
+> **Warning: The "master" branch is no longer used.  Use "main" instead.**<br>
+> https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
+
 A repo manifest describes the structure of a repo client; that is
 the directories that are visible and where they should be obtained
 from with git.
diff --git a/docs/python-support.md b/docs/python-support.md
index a5c490a8..f2062b46 100644
--- a/docs/python-support.md
+++ b/docs/python-support.md
@@ -1,5 +1,8 @@
 # Supported Python Versions
 
+> **Warning: The "master" branch is no longer used.  Use "main" instead.**<br>
+> https://gerrit.googlesource.com/git-repo/+/HEAD/docs/python-support.md
+
 With Python 2.7 officially going EOL on [01 Jan 2020](https://pythonclock.org/),
 we need a support plan for the repo project itself.
 Inevitably, there will be a long tail of users who still want to use Python 2 on
diff --git a/docs/release-process.md b/docs/release-process.md
index 0df590ac..170dbc25 100644
--- a/docs/release-process.md
+++ b/docs/release-process.md
@@ -1,5 +1,8 @@
 # repo release process
 
+> **Warning: The "master" branch is no longer used.  Use "main" instead.**<br>
+> https://gerrit.googlesource.com/git-repo/+/HEAD/docs/release-process.md
+
 This is the process for creating a new release of repo, as well as all the
 related topics and flows.
 
diff --git a/docs/repo-hooks.md b/docs/repo-hooks.md
index 7c37c30e..6c5eac3c 100644
--- a/docs/repo-hooks.md
+++ b/docs/repo-hooks.md
@@ -1,5 +1,8 @@
 # repo hooks
 
+> **Warning: The "master" branch is no longer used.  Use "main" instead.**<br>
+> https://gerrit.googlesource.com/git-repo/+/HEAD/docs/repo-hooks.md
+
 [TOC]
 
 Repo provides a mechanism to hook specific stages of the runtime with custom
diff --git a/docs/windows.md b/docs/windows.md
index 4282bebf..7453188a 100644
--- a/docs/windows.md
+++ b/docs/windows.md
@@ -1,5 +1,8 @@
 # Microsoft Windows Details
 
+> **Warning: The "master" branch is no longer used.  Use "main" instead.**<br>
+> https://gerrit.googlesource.com/git-repo/+/HEAD/docs/windows.md
+
 Repo is primarily developed on Linux with a lot of users on macOS.
 Windows is, unfortunately, not a common platform.
 There is support in repo for Windows, but there might be some rough edges.