diff --git a/requirements.txt b/requirements.txt
index 428c6b16d..bde9a48da 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ gevent==23.9.0.post1  # http://www.gevent.org/changelog.html
 greenlet>=3.0rc1
 werkzeug<1.0 # https://github.com/pallets/werkzeug/blob/master/CHANGES
 backports.ssl-match-hostname==3.7.0.1 # required by tornado<5.0
-patool>=1.12,<1.13  # https://github.com/wummel/patool/blob/master/doc/changelog.txt
+patool>=1.12,<3.1  # https://github.com/wummel/patool/blob/master/doc/changelog.txt
 bcrypt>=3.1,<4.3  # https://github.com/pyca/bcrypt/
 chardet>=3.0,<3.1  # https://pypi.python.org/pypi/chardet
 babel==2.12.1  # http://babel.pocoo.org/en/latest/changelog.html