diff --git a/README.md b/README.md
index 1ced50de9a..a6a39b0358 100644
--- a/README.md
+++ b/README.md
@@ -2366,7 +2366,7 @@ usage: -m [-h] [--tunnel-hostname TUNNEL_HOSTNAME] [--tunnel-port TUNNEL_PORT]
           [--filtered-client-ips FILTERED_CLIENT_IPS]
           [--filtered-url-regex-config FILTERED_URL_REGEX_CONFIG]
 
-proxy.py v2.4.4rc6.dev3+gdbcff7af.d20240413
+proxy.py v2.4.4rc6.dev9+g11e37a62.d20240413
 
 options:
   -h, --help            show this help message and exit
diff --git a/requirements-testing.txt b/requirements-testing.txt
index b59dffb459..5ccf9bd99a 100644
--- a/requirements-testing.txt
+++ b/requirements-testing.txt
@@ -2,21 +2,28 @@ wheel==0.37.1
 python-coveralls==2.9.3
 coverage==6.2
 flake8==4.0.1
-pytest==7.0.1
-pytest-cov==3.0.0
-pytest-xdist == 2.5.0
-pytest-mock==3.6.1
-pytest-asyncio==0.16.0
+# pytest for Python<3.11
+pytest==7.0.1; python_version < '3.11'
+pytest-cov==3.0.0; python_version < '3.11'
+pytest-xdist == 2.5.0; python_version < '3.11'
+pytest-mock==3.6.1; python_version < '3.11'
+pytest-asyncio==0.16.0; python_version < '3.11'
+# pytest for Python>=3.11
+pytest==8.1.1; python_version >= '3.11'
+pytest-cov==5.0.0; python_version >= '3.11'
+pytest-xdist == 3.5.0; python_version >= '3.11'
+pytest-mock==3.14.0; python_version >= '3.11'
+pytest-asyncio==0.23.6; python_version >= '3.11'
 autopep8==1.6.0
 mypy==0.971
 py-spy==0.3.12
 tox==3.28.0
 mccabe==0.6.1
-pylint==2.13.7; python_version <= '3.10'
+pylint==2.13.7; python_version < '3.11'
 pylint==3.1.0; python_version >= '3.11'
 rope==1.1.1
 # Required by test_http2.py
-httpx==0.22.0; python_version <= '3.10'
+httpx==0.22.0; python_version < '3.11'
 httpx==0.27.0; python_version >= '3.11'
 h2==4.1.0
 hpack==4.0.0
diff --git a/tox.ini b/tox.ini
index 2a777f9cb5..5e7d706a4b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -262,7 +262,6 @@ deps =
   pre-commit
   pylint >= 2.5.3
   pylint-pytest < 1.1.0
-  pytest-mock == 3.6.1
   -r docs/requirements.in
   -r requirements-tunnel.txt
   -r requirements-testing.txt