diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index b3478489..c3e039c7 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -20,4 +20,4 @@ jobs:
       - uses: paddyroddy/.github/actions/python/deployment@3135c318562994eafc62974821c6f80aa64b35da # v0
         with:
           pyproject-toml: ./pyproject.toml
-          python-version: "3.11"
+          python-version: "3.12"
diff --git a/.github/workflows/documentation.yaml b/.github/workflows/documentation.yaml
index f0fedc77..e5292a7d 100644
--- a/.github/workflows/documentation.yaml
+++ b/.github/workflows/documentation.yaml
@@ -20,5 +20,5 @@ jobs:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           project-directory: ./src/sleplet
           pyproject-toml: ./pyproject.toml
-          python-version: "3.11"
+          python-version: "3.12"
           template-directory: ./documentation
diff --git a/.github/workflows/examples.yaml b/.github/workflows/examples.yaml
index c7e43dcf..65f71a84 100644
--- a/.github/workflows/examples.yaml
+++ b/.github/workflows/examples.yaml
@@ -19,12 +19,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source
-        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
 
       - name: Set up python
         uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d # v5
         with:
-          python-version: "3.11"
+          python-version: "3.12"
           cache: pip
           cache-dependency-path: pyproject.toml
 
@@ -44,12 +44,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source
-        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
 
       - name: Set up python
         uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d # v5
         with:
-          python-version: "3.11"
+          python-version: "3.12"
           cache: pip
           cache-dependency-path: pyproject.toml
 
diff --git a/.github/workflows/paper.yaml b/.github/workflows/paper.yaml
index 497615ea..981cb6d2 100644
--- a/.github/workflows/paper.yaml
+++ b/.github/workflows/paper.yaml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
 
       - name: Build draft PDF
         uses: openjournals/openjournals-draft-action@master
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index bd685e2f..a2c0a7aa 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -21,6 +21,7 @@ jobs:
         python-version:
           - "3.10"
           - "3.11"
+          - "3.12"
     steps:
       # yamllint disable-line rule:line-length
       - uses: paddyroddy/.github/actions/python/tox@e59369bbd745ef1eae9b8327fba32a4f87ff13ca # v0
@@ -54,5 +55,6 @@ jobs:
             run-macos-latest-3.10,\
             run-ubuntu-latest-3.10,\
             run-macos-latest-3.11,\
-            run-ubuntu-latest-3.11\
-            "
+            run-ubuntu-latest-3.11,\
+            run-macos-latest-3.12,\
+            run-ubuntu-latest-3.12"
diff --git a/pyproject.toml b/pyproject.toml
index 66ada6b5..c575dbda 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,6 +16,7 @@ classifiers = [
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Topic :: Scientific/Engineering :: Image Processing",
     "Topic :: Scientific/Engineering :: Mathematics",
     "Topic :: Scientific/Engineering :: Physics",
@@ -211,6 +212,7 @@ legacy_tox_ini = """
     python =
         3.10: py310
         3.11: py311
+        3.12: py312
 
     [gh-actions:env]
     OS =
@@ -224,5 +226,5 @@ legacy_tox_ini = """
         pytest-cov
 
     [tox]
-    env_list = py{310,311}-{linux,macos}
+    env_list = py{310,311,312}-{linux,macos}
 """