diff --git a/.github/workflows/testing.yaml b/.github/workflows/testing.yaml
index bcd78c3d..fc7816a0 100644
--- a/.github/workflows/testing.yaml
+++ b/.github/workflows/testing.yaml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
 
     name: 'Python ${{ matrix.python-version }}'
 
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 0d7c8dbe..21c74cf7 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -11,10 +11,17 @@ Changelog
 0.11.0
 ======
 
+.. warning::
+
+  This release drops support for Python 3.8 which reached end-of-life
+  2024-10-17
+
 * Depletion reader settings can be provided at construction - :pull:`516`
 * Support ``numpy`` 2.0 - :pull:`524`
 * Names of detectors to read can be provided at construction of the detector
   reader - :pull:`519`
+* Drop Python 3.8 - :pull:`525`
+* Support Python 3.12, 3.13 - :pull:`525`
 
 .. _v0.10.1:
 
@@ -25,7 +32,7 @@ This is a bug fix release to fix installing the package.
 Users should experience no changes. Developer should note
 that the package has moved from a "flat-layout" to a "src-layout",
 where the code the the package has moved from ``serpentTools``
-to ``src/serpentTools``
+to ``src/serpentTools``Commit
 
 * Move from "flat-layout" to "src-layout" - :pull:`506`
 
diff --git a/pyproject.toml b/pyproject.toml
index 0d18953d..176cfcc0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ maintainers = [
 ]
 description = "A suite of parsers designed to make interacting with Serpent output files simple, scriptable, and flawless"
 readme = "README.rst"
-requires-python = ">=3.8,<3.12"
+requires-python = ">=3.9,<3.14"
 classifiers = [
     "Development Status :: 3 - Alpha",
     "Intended Audience :: Education",
@@ -20,10 +20,11 @@ classifiers = [
     "License :: OSI Approved :: MIT License",
     "Natural Language :: English",
     "Programming Language :: Python",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
 ]
 license = {file = "LICENSE"}
 dependencies = [
diff --git a/tests/test_messages.py b/tests/test_messages.py
index 090ddc61..29b386ca 100644
--- a/tests/test_messages.py
+++ b/tests/test_messages.py
@@ -32,8 +32,8 @@ def demoFuture(x, val=5):
         with catch_warnings(record=True) as record:
             self.assertEqual(7, demoFuture(2))
             self.assertEqual(7, demoFuture(2, 5))
-            self.assertEquals(len(record), 2,
-                              'Did not catch two warnings::willChange')
+            self.assertEqual(len(record), 2,
+                             "Did not catch two warnings::willChange")
 
     def test_deprecatedDecorator(self):
         """Verify that the deprecated decorator doesn't break things"""
@@ -45,8 +45,8 @@ def demoFunction(x, val=5):
         with catch_warnings(record=True) as record:
             self.assertEqual(7, demoFunction(2))
             self.assertEqual(7, demoFunction(2, 5))
-            self.assertEquals(len(record), 2,
-                              'Did not catch two warnings::deprecation')
+            self.assertEqual(len(record), 2,
+                             "Did not catch two warnings::deprecation")
 
 
 class LoggingTester(TestCaseWithLogCapture):