diff --git a/CHANGELOG.md b/CHANGELOG.md
index cbd564eaf..2069d75ed 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## [Unreleased]
 
+- Added support for Python 3.11.8 and 3.12.2. ([#1538](https://github.com/heroku/heroku-buildpack-python/pull/1538)).
+- Changed the default Python version for new apps from 3.12.1 to 3.12.2. ([#1538](https://github.com/heroku/heroku-buildpack-python/pull/1538))
 
 ## [v242] - 2024-01-11
 
diff --git a/README.md b/README.md
index 2bc72f6d7..103a3fc14 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ A `requirements.txt` must be present at the root of your application's repositor
 
 To specify your python version, you also need a `runtime.txt` file - unless you are using the default Python runtime version.
 
-Current default Python Runtime: Python 3.12.1
+Current default Python Runtime: Python 3.12.2
 
 Alternatively, you can provide a `setup.py` file, or a `Pipfile`.
 Using `pipenv` will generate `runtime.txt` at build time if one of the field `python_version` or `python_full_version` is specified in the `requires` section of your `Pipfile`.
@@ -60,8 +60,8 @@ Specify a Python Runtime
 
 Supported runtime options include:
 
-- `python-3.12.1` on all [supported stacks](https://devcenter.heroku.com/articles/stack#stack-support-details)
-- `python-3.11.7` on all [supported stacks](https://devcenter.heroku.com/articles/stack#stack-support-details)
+- `python-3.12.2` on all [supported stacks](https://devcenter.heroku.com/articles/stack#stack-support-details)
+- `python-3.11.8` on all [supported stacks](https://devcenter.heroku.com/articles/stack#stack-support-details)
 - `python-3.10.13` on all [supported stacks](https://devcenter.heroku.com/articles/stack#stack-support-details)
 - `python-3.9.18` on all [supported stacks](https://devcenter.heroku.com/articles/stack#stack-support-details)
 - `python-3.8.18` on Heroku-20 only
diff --git a/bin/default_pythons b/bin/default_pythons
index 48a8a9f9e..70480a2c6 100755
--- a/bin/default_pythons
+++ b/bin/default_pythons
@@ -5,8 +5,8 @@
 # the env vars to subprocesses.
 # shellcheck disable=2034
 
-LATEST_312="python-3.12.1"
-LATEST_311="python-3.11.7"
+LATEST_312="python-3.12.2"
+LATEST_311="python-3.11.8"
 LATEST_310="python-3.10.13"
 LATEST_39="python-3.9.18"
 LATEST_38="python-3.8.18"
diff --git a/spec/fixtures/python_3.11/runtime.txt b/spec/fixtures/python_3.11/runtime.txt
index 1f79d441f..cf3b80423 100644
--- a/spec/fixtures/python_3.11/runtime.txt
+++ b/spec/fixtures/python_3.11/runtime.txt
@@ -1 +1 @@
-python-3.11.7
+python-3.11.8
diff --git a/spec/fixtures/python_3.12/runtime.txt b/spec/fixtures/python_3.12/runtime.txt
index 178174578..6e797d468 100644
--- a/spec/fixtures/python_3.12/runtime.txt
+++ b/spec/fixtures/python_3.12/runtime.txt
@@ -1 +1 @@
-python-3.12.1
+python-3.12.2
diff --git a/spec/hatchet/python_version_spec.rb b/spec/hatchet/python_version_spec.rb
index 5eef1dbc6..734e97884 100644
--- a/spec/hatchet/python_version_spec.rb
+++ b/spec/hatchet/python_version_spec.rb
@@ -188,13 +188,13 @@
     include_examples 'builds with the requested Python version', LATEST_PYTHON_3_10
   end
 
-  context 'when runtime.txt contains python-3.11.7' do
+  context 'when runtime.txt contains python-3.11.8' do
     let(:app) { Hatchet::Runner.new('spec/fixtures/python_3.11') }
 
     include_examples 'builds with the requested Python version', LATEST_PYTHON_3_11
   end
 
-  context 'when runtime.txt contains python-3.12.1' do
+  context 'when runtime.txt contains python-3.12.2' do
     let(:app) { Hatchet::Runner.new('spec/fixtures/python_3.12') }
 
     include_examples 'builds with the requested Python version', LATEST_PYTHON_3_12
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index c83ff440d..502bc9025 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -9,8 +9,8 @@
 LATEST_PYTHON_3_8 = '3.8.18'
 LATEST_PYTHON_3_9 = '3.9.18'
 LATEST_PYTHON_3_10 = '3.10.13'
-LATEST_PYTHON_3_11 = '3.11.7'
-LATEST_PYTHON_3_12 = '3.12.1'
+LATEST_PYTHON_3_11 = '3.11.8'
+LATEST_PYTHON_3_12 = '3.12.2'
 DEFAULT_PYTHON_VERSION = LATEST_PYTHON_3_12
 
 # The requirement versions are effectively buildpack constants, however, we want