diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index da01b65..4dafaa5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,7 +5,7 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10"]
+        python-version: ["3.9", "3.10", "3.11"]
     steps:
     - uses: actions/checkout@master
     - name: Set up Python ${{ matrix.python-version }}
diff --git a/clipkit/version.py b/clipkit/version.py
index a7ecb80..55e4709 100644
--- a/clipkit/version.py
+++ b/clipkit/version.py
@@ -1 +1 @@
-__version__ = "2.2.6"
+__version__ = "2.3.0"
diff --git a/docs/change_log/index.rst b/docs/change_log/index.rst
index 2c7ba65..6353dd9 100644
--- a/docs/change_log/index.rst
+++ b/docs/change_log/index.rst
@@ -8,6 +8,9 @@ Change log
 
 Major changes to ClipKIT are summarized here.
 
+**2.3.0**
+Added support for Python version 3.11
+
 **2.2.3**
 Fixed gap character handling. The help message was incongruent
 with what was happening underneath the hood.
diff --git a/requirements.txt b/requirements.txt
index 918167b..8e47a32 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,16 +1,15 @@
 appdirs==1.4.3
 attrs==19.3.0
-biopython==1.81
+biopython==1.82
 click==7.1.2
 importlib-metadata==1.6.0
 more-itertools==8.2.0
 numpy==1.24.0
 packaging==20.3
 pathspec==0.8.0
-pluggy==0.13.1
-py==1.8.1
+pluggy==1.5.0
 pyparsing==2.4.7
-pytest==7.2.2
+pytest==8.1.1
 pytest-mock==3.0.0
 regex==2020.5.7
 six==1.14.0
diff --git a/setup.py b/setup.py
index 2109922..d898386 100644
--- a/setup.py
+++ b/setup.py
@@ -14,10 +14,11 @@
     "Programming Language :: Python",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
     "Topic :: Scientific/Engineering",
 ]
 
-REQUIRES = ["biopython>=1.81", "numpy>=1.24.0", "cython"]
+REQUIRES = ["biopython>=1.82", "numpy>=1.24.0", "cython"]
 
 setup(
     name="clipkit",