diff --git a/actions/build_macosuniversal.sh b/actions/build_macosuniversal.sh
index c24e7462..0edecb4c 100755
--- a/actions/build_macosuniversal.sh
+++ b/actions/build_macosuniversal.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# Build universal2 wheels for Python 3.8 through Python 3.12, compatible with
+# Build universal2 wheels for Python 3.8 through Python 3.13, compatible with
 # Mac OS X 10.9+ x86_64 and macOS 11.0+ arm64. This script must be executed with
 # the repository root as the working directory.
 #
@@ -34,7 +34,7 @@ make -j $(sysctl -n hw.logicalcpu) test
 
 ##### Build iknowpy wheels #####
 cd modules/iknowpy
-for PYTHON in python3.{8..12}; do
+for PYTHON in python3.{8..13}; do
   "$PYTHON" setup.py bdist_wheel --plat-name=macosx-$MACOSX_DEPLOYMENT_TARGET-universal2 --no-dependencies
 done
 "$PYTHON" setup.py merge --no-dependencies
diff --git a/actions/build_manylinux.sh b/actions/build_manylinux.sh
index 46d8d50f..47d04cca 100755
--- a/actions/build_manylinux.sh
+++ b/actions/build_manylinux.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# Build manylinux wheels for Python 3.8 through Python 3.12. This script must be
+# Build manylinux wheels for Python 3.8 through Python 3.13. This script must be
 # executed inside a manylinux container in which /iknow is the root of the
 # repository.
 #
@@ -44,7 +44,7 @@ if ! [ -f "$ICUDIR/iknow_icu_url.txt" ] || [ $(cat "$ICUDIR/iknow_icu_url.txt")
   curl -L -o icu4c-src.tgz "$ICU_URL"
   tar xfz icu4c-src.tgz
   cd icu/source
-  PYTHON=/opt/python/cp312-cp312/bin/python CXXFLAGS=-std=c++11 ./runConfigureICU Linux --prefix="$ICUDIR"
+  PYTHON=/opt/python/cp313-cp313/bin/python CXXFLAGS=-std=c++11 ./runConfigureICU Linux --prefix="$ICUDIR"
   make -j $(nproc)
   make install
   echo "$ICU_URL" > "$ICUDIR/iknow_icu_url.txt"
@@ -90,7 +90,7 @@ export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/iknow/kit/$IKNOWPLAT/release/bin:$ICUD
 
 # install Python package dependencies and build initial wheels
 chown -R root "$PIP_CACHE_DIR"
-for PYTHON in /opt/python/{cp38-cp38,cp39-cp39,cp310-cp310,cp311-cp311,cp312-cp312}/bin/python
+for PYTHON in /opt/python/{cp38-cp38,cp39-cp39,cp310-cp310,cp311-cp311,cp312-cp312,cp313-cp313}/bin/python
 do
   "$PYTHON" -m pip install --user cython=="$CYTHON_VERSION" setuptools wheel --no-warn-script-location
   "$PYTHON" setup.py bdist_wheel --no-dependencies
diff --git a/actions/build_windows.sh b/actions/build_windows.sh
index 120c851c..ff2f140c 100755
--- a/actions/build_windows.sh
+++ b/actions/build_windows.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# Build Windows x86_64 wheels for Python 3.8 through Python 3.12. This script
+# Build Windows x86_64 wheels for Python 3.8 through Python 3.13. This script
 # must be executed with the repository root as the working directory.
 #
 # Usage: actions/build_windows.sh
diff --git a/actions/dependencies.sh b/actions/dependencies.sh
index 1da742ce..676f5813 100755
--- a/actions/dependencies.sh
+++ b/actions/dependencies.sh
@@ -15,9 +15,9 @@ ICU_URL_WIN=https://github.com/unicode-org/icu/releases/download/release-74-2/ic
 ICU_URL_SRC=https://github.com/unicode-org/icu/releases/download/release-74-2/icu4c-74_2-src.tgz
 JSON_VERSION=3.11.3
 JSON_URL=https://github.com/nlohmann/json/releases/download/v3.11.3/include.zip
-PYVERSIONS_WIN="3.8.10 3.9.13 3.10.11 3.11.9 3.12.5"
-PYVERSIONS_MACOSUNIVERSAL="3.8.10 3.9.13 3.10.11 3.11.9 3.12.5"
-PYURLS_MACOSUNIVERSAL="https://www.python.org/ftp/python/3.8.10/python-3.8.10-macos11.pkg https://www.python.org/ftp/python/3.9.13/python-3.9.13-macos11.pkg https://www.python.org/ftp/python/3.10.11/python-3.10.11-macos11.pkg https://www.python.org/ftp/python/3.11.9/python-3.11.9-macos11.pkg https://www.python.org/ftp/python/3.12.5/python-3.12.5-macos11.pkg"
+PYVERSIONS_WIN="3.8.10 3.9.13 3.10.11 3.11.9 3.12.5 3.13.9"
+PYVERSIONS_MACOSUNIVERSAL="3.8.10 3.9.13 3.10.11 3.11.9 3.12.5 3.13.9"
+PYURLS_MACOSUNIVERSAL="https://www.python.org/ftp/python/3.8.10/python-3.8.10-macos11.pkg https://www.python.org/ftp/python/3.9.13/python-3.9.13-macos11.pkg https://www.python.org/ftp/python/3.10.11/python-3.10.11-macos11.pkg https://www.python.org/ftp/python/3.11.9/python-3.11.9-macos11.pkg https://www.python.org/ftp/python/3.12.5/python-3.12.5-macos11.pkg https://www.python.org/ftp/python/3.13.9/python-3.13.9-macos11.pkg"
 CCACHE_VERSION=4.10.2
 CCACHE_URL=https://github.com/ccache/ccache/releases/download/v4.10.2/ccache-4.10.2-windows-x86_64.zip
 CYTHON_VERSION=3.0.11
diff --git a/modules/iknowpy/setup.py b/modules/iknowpy/setup.py
index 9ef41a00..d73aa2be 100644
--- a/modules/iknowpy/setup.py
+++ b/modules/iknowpy/setup.py
@@ -87,7 +87,7 @@ def __init__(self):
                 raise BuildError(f'Unable to parse patchelf version {p.stdout.rstrip()!r}')
             if version < (0, 9):
                 raise BuildError(f'patchelf >=0.9 is needed, but found version {p.stdout.rstrip()!r}')
-            if platform.processor() == 'aarch64' and version < (0, 12):
+            if platform.processor() == 'aarch64' and version < (0, 13):
                 # work around patchelf bug (https://github.com/NixOS/patchelf/pull/216)
                 self._patchelf = ['patchelf', '--page-size', '65536']
             else:
@@ -818,6 +818,7 @@ def is_canonical_version(version):
             'Programming Language :: Python :: 3.10',
             'Programming Language :: Python :: 3.11',
             'Programming Language :: Python :: 3.12',
+            'Programming Language :: Python :: 3.13',
             'Programming Language :: Python :: Implementation :: CPython',
             'Operating System :: MacOS :: MacOS X',
             'Operating System :: Microsoft :: Windows',