diff --git a/release-branch.py b/release-branch.py
new file mode 100644
index 00000000..b8ed345c
--- /dev/null
+++ b/release-branch.py
@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+import sys
+import os
+import json
+
+# TODO add scripts to
+# * Merge the release branch, create a tag
+# * `yarn install`, build, publish to Chrome Web Store, Mozilla, etc.
+
+def main():
+    """
+    * Switch to a new `release-x.x.x` branch
+    * Bump version in `manifest.json` (minor or patch, depending on arguments)
+    * `git commit -m "chore: bump version"`
+    """
+    manifest_path = 'src/manifest.json'
+    with open(manifest_path) as f:
+        parsed = json.load(f)
+    curr_version = parsed['version']
+    major, minor, patch = [int(string) for string in curr_version.split('.')]
+
+    def format_version():
+        return '{}.{}.{}'.format(major, minor, patch)
+
+    print('Current version: {}'.format(format_version()))
+
+    release_type = sys.argv[1] if len(sys.argv) > 1 else None
+    if release_type == 'minor':
+        minor += 1
+        patch = 0
+    elif release_type == 'patch':
+        patch += 1
+    else:
+        raise Exception('Expected release type ("minor" or "patch"), got {}'.format(release_type))
+
+    bumped_version = format_version()
+    print('Bumped version: {}'.format(bumped_version))
+
+    with os.popen('git status --short') as stream:
+        output = stream.read()
+    if len(output) != 0:
+        msg = input('Uncommited changes detected. Continue (y/n)?')
+        if msg != 'y':
+            return -1
+
+    with open(manifest_path, 'r') as f:
+        content = f.read()
+    content = content.replace(curr_version, bumped_version)
+    with open(manifest_path, 'w') as f:
+        f.write(content)
+
+    def exec_command(command):
+        return_code = os.system(command)
+        if return_code != 0:
+            raise Exception()
+
+    exec_command('git checkout -b release-{}'.format(bumped_version))
+    exec_command('git add {}'.format(manifest_path))
+    exec_command('git commit -m "chore: bump version"')
+
+if __name__ == '__main__':
+    main()
diff --git a/tag-and-push.bash b/tag-and-push.bash
new file mode 100644
index 00000000..9e8231d5
--- /dev/null
+++ b/tag-and-push.bash
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+# https://stackoverflow.com/questions/821396/aborting-a-shell-script-if-any-command-returns-a-non-zero-value
+set -e
+
+currentVersion=$(cat src/manifest.json | grep -Po '(?<="version": ").+(?=")');
+tagName=v$currentVersion;
+git tag -s $tagName -m $tagName;
+git push gitlab master $tagName & git push origin master $tagName;