diff --git a/.github/workflows/_test.yml b/.github/workflows/_test.yml
index 66b738b2..55e495d9 100644
--- a/.github/workflows/_test.yml
+++ b/.github/workflows/_test.yml
@@ -37,7 +37,7 @@ jobs:
       # (sslib main) on Linux/Python3.x only.
       matrix:
         toxenv: [py]
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
         os: [ubuntu-latest, macos-latest, windows-latest]
         include:
           - python-version: 3.x
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index b4dd7712..96096895 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -10,7 +10,7 @@ version: 2
 build:
   os: "ubuntu-22.04"
   tools:
-    python: "3.11"
+    python: "3.12"
 
 # Build documentation with Sphinx
 sphinx:
diff --git a/pyproject.toml b/pyproject.toml
index bb2c2b2f..0d039099 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,6 +37,7 @@ classifiers = [
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: Implementation :: CPython",
   "Topic :: Security",
   "Topic :: Software Development",