diff --git a/release/annotate_pr.py b/release/annotate_pr.py
new file mode 100644
index 00000000..bd2f6fd8
--- /dev/null
+++ b/release/annotate_pr.py
@@ -0,0 +1,39 @@
+"""Helper script for including change log entries in an open PR.
+
+Automatically constructs the change log entry from the PR title.
+Copies the entry to the window manager clipboard.
+Opens the change log belonging to the specific PR in a browser window.
+All you have to do is paste and click "commit changes".
+"""
+import json
+import sys
+import webbrowser
+
+import smart_open
+
+
+def copy_to_clipboard(text):
+    try:
+        import pyperclip
+    except ImportError:
+        print('pyperclip <https://pypi.org/project/pyperclip/> is missing.', file=sys.stderr)
+        print('copy-paste the following text manually:', file=sys.stderr)
+        print('\t', text, file=sys.stderr)
+    else:
+        pyperclip.copy(text)
+
+
+prid = int(sys.argv[1])
+url = "https://api.github.com/repos/RaRe-Technologies/smart_open/pulls/%d" % prid
+with smart_open.open(url) as fin:
+    prinfo = json.load(fin)
+
+prinfo['user_login'] = prinfo['user']['login']
+prinfo['user_html_url'] = prinfo['user']['html_url']
+text = '- %(title)s (PR [#%(number)s](%(html_url)s), [@%(user_login)s](%(user_html_url)s))' % prinfo
+copy_to_clipboard(text)
+
+prinfo['head_repo_html_url'] = prinfo['head']['repo']['html_url']
+prinfo['head_ref'] = prinfo['head']['ref']
+edit_url = '%(head_repo_html_url)s/edit/%(head_ref)s/CHANGELOG.md' % prinfo
+webbrowser.open(edit_url)