diff --git a/.devcontainer/Dockerfile.dev b/.devcontainer/Dockerfile.dev
index 6a361ae..0137929 100644
--- a/.devcontainer/Dockerfile.dev
+++ b/.devcontainer/Dockerfile.dev
@@ -22,8 +22,7 @@ RUN pip3 install \
       pytest \
       pytest-cov \
       python-coveralls \
-      rstcheck \
-      snooty-lextudio
+      rstcheck
 
 WORKDIR /workspaces
 
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 5ac1df5..3b1539c 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -9,10 +9,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - name: Set up Python 3.7
+      - name: Set up Python 3.9
         uses: actions/setup-python@v4
         with:
-          python-version: 3.7
+          python-version: 3.9
       - name: Install pypa/build
         run: >-
           python -m
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 214de73..364ff08 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,9 +11,9 @@ jobs:
       matrix:
         include:
           - python-version: "3.7"
-            os: ubuntu-latest
+            os: ubuntu-20.04
           - python-version: "3.8"
-            os: ubuntu-latest
+            os: ubuntu-20.04
           - python-version: "3.9"
             os: ubuntu-latest
           - python-version: "3.10"
@@ -22,6 +22,8 @@ jobs:
             os: ubuntu-latest
           - python-version: "3.12"
             os: ubuntu-latest
+          - python-version: "3.13"
+            os: ubuntu-latest
           - python-version: "pypy3.9"
             os: windows-latest
 
@@ -33,8 +35,13 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      - name: Install dependencies
-        run: pip install pytest pytest-cov python-coveralls coverage flake8 pydocstyle setuptools
+      - name: Install dependencies (Windows)
+        if: runner.os == 'Windows'
+        run: pip install pytest pytest-cov python-coveralls coverage flake8 pydocstyle setuptools cryptography<44
+
+      - name: Install dependencies (Ubuntu)
+        if: runner.os == 'Linux'
+        run: pip install pytest pytest-cov python-coveralls coverage flake8 pydocstyle setuptools cryptography
 
       - name: Lint with flake8
         run: |
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
index af5ed85..70bc5ec 100644
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@@ -18,7 +18,7 @@
     {
       "label": "Run tests",
       "type": "shell",
-      "command": "pytest --cov=pyfritzhome",
+      "command": "pytest --cov=pyfritzhome --cov-report term-missing",
       "group": {
         "kind": "test",
         "isDefault": true
diff --git a/setup.cfg b/setup.cfg
index 04df847..a099330 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -19,6 +19,7 @@ classifiers =
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
+    Programming Language :: Python :: 3.13
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: Implementation :: PyPy