diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 8aa85c5a5..c2e38476e 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -29,7 +29,7 @@ repos:
 
         additional_dependencies:
           - httpx~=0.24.1
-          - tornado~=6.2
+          - tornado~=6.3.3
           - APScheduler~=3.10.4
           - cachetools~=5.3.1
           - aiolimiter~=1.1.0
@@ -45,7 +45,7 @@ repos:
           - types-cryptography
           - types-cachetools
           - httpx~=0.24.1
-          - tornado~=6.2
+          - tornado~=6.3.3
           - APScheduler~=3.10.4
           - cachetools~=5.3.1
           - aiolimiter~=1.1.0
@@ -57,7 +57,7 @@ repos:
         - --no-strict-optional
         - --follow-imports=silent
       additional_dependencies:
-        - tornado~=6.2
+        - tornado~=6.3.3
         - APScheduler~=3.10.4
         - cachetools~=5.3.1
         - . # this basically does `pip install -e .`
@@ -84,7 +84,7 @@ repos:
         files: ^(telegram|examples|tests)/.*\.py$
         additional_dependencies:
           - httpx~=0.24.1
-          - tornado~=6.2
+          - tornado~=6.3.3
           - APScheduler~=3.10.4
           - cachetools~=5.3.1
           - aiolimiter~=1.1.0
diff --git a/README.rst b/README.rst
index 4b06d6158..7549e7e30 100644
--- a/README.rst
+++ b/README.rst
@@ -152,7 +152,7 @@ PTB can be installed with optional dependencies:
 * ``pip install "python-telegram-bot[socks]"`` installs `httpx[socks] <https://www.python-httpx.org/#dependencies>`_. Use this, if you want to work behind a Socks5 server.
 * ``pip install "python-telegram-bot[http2]"`` installs `httpx[http2] <https://www.python-httpx.org/#dependencies>`_. Use this, if you want to use HTTP/2.
 * ``pip install "python-telegram-bot[rate-limiter]"`` installs `aiolimiter~=1.1.0 <https://aiolimiter.readthedocs.io/en/stable/>`_. Use this, if you want to use ``telegram.ext.AIORateLimiter``.
-* ``pip install "python-telegram-bot[webhooks]"`` installs the `tornado~=6.2 <https://www.tornadoweb.org/en/stable/>`_ library. Use this, if you want to use ``telegram.ext.Updater.start_webhook``/``telegram.ext.Application.run_webhook``.
+* ``pip install "python-telegram-bot[webhooks]"`` installs the `tornado~=6.3.3 <https://www.tornadoweb.org/en/stable/>`_ library. Use this, if you want to use ``telegram.ext.Updater.start_webhook``/``telegram.ext.Application.run_webhook``.
 * ``pip install "python-telegram-bot[callback-data]"`` installs the `cachetools~=5.3.1 <https://cachetools.readthedocs.io/en/latest/>`_ library. Use this, if you want to use `arbitrary callback_data <https://github.com/python-telegram-bot/python-telegram-bot/wiki/Arbitrary-callback_data>`_.
 * ``pip install "python-telegram-bot[job-queue]"`` installs the `APScheduler~=3.10.4 <https://apscheduler.readthedocs.io/en/3.x/>`_ library and enforces `pytz>=2018.6 <https://pypi.org/project/pytz/>`_, where ``pytz`` is a dependency of ``APScheduler``. Use this, if you want to use the ``telegram.ext.JobQueue``.
 
diff --git a/requirements-opts.txt b/requirements-opts.txt
index 1df2cf65a..a794b2e48 100644
--- a/requirements-opts.txt
+++ b/requirements-opts.txt
@@ -16,7 +16,7 @@ cryptography!=3.4,!=3.4.1,!=3.4.2,!=3.4.3,>=39.0.1 # passport
 aiolimiter~=1.1.0 # rate-limiter!ext
 
 # tornado is rather stable, but let's not allow the next mayor release without prior testing
-tornado~=6.2 # webhooks!ext
+tornado~=6.3.3 # webhooks!ext
 
 # Cachetools and APS don't have a strict stability policy.
 # Let's be cautious for now.