diff --git a/.github/workflows/python-benchmarking.yml b/.github/workflows/python-benchmarking.yml
index 42a26740..9a8c23f2 100644
--- a/.github/workflows/python-benchmarking.yml
+++ b/.github/workflows/python-benchmarking.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.12"]
+        python-version: ["3.13"]
 
     steps:
     - uses: actions/checkout@v4.1.1
diff --git a/.github/workflows/python-tests.yml b/.github/workflows/python-tests.yml
index 05a8ad43..c29aca68 100644
--- a/.github/workflows/python-tests.yml
+++ b/.github/workflows/python-tests.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
 
     steps:
       - uses: actions/checkout@v4.1.1
diff --git a/.github/workflows/run-examples.yml b/.github/workflows/run-examples.yml
index 51adeb59..f289f2c4 100644
--- a/.github/workflows/run-examples.yml
+++ b/.github/workflows/run-examples.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.12"]
+        python-version: ["3.13"]
 
     steps:
     - uses: actions/checkout@v4.1.1
diff --git a/pyproject.toml b/pyproject.toml
index d17840b9..98fd0b88 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
 ]
 
 [project.urls]
diff --git a/setup.cfg b/setup.cfg
index 8e4f9503..97bc2d6a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -12,8 +12,6 @@ classifiers =
     Operating System :: OS Independent
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.9
-    Programming Language :: Python :: 3.10
 project_urls =
     Bug Tracker = http://github.com/alcides/GeneticEngine/issues
 
@@ -22,7 +20,7 @@ packages = find:
 install_requires =
     lark
     z3-solver
-python_requires = >=3.9
+python_requires = >=3.10
 
 [options.packages.find]
 where = .