diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8cb389b..ff92e0d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,23 +10,20 @@ on:
       - '**'
 
 jobs:
-  job:
-    runs-on: ubuntu-22.04
-    strategy:
-      matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+  lint:
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
+
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ matrix.python-version }}
-          architecture: x64
+          python-version: 3.12
 
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install flake8==5.0.4 flake8-import-order==0.18.1 darglint==1.8.1 codespell mypy types-requests
+          python -m pip install flake8==7.1.1 flake8-import-order==0.18.2 darglint==1.8.1 codespell mypy types-requests
 
       - name: Lint with flake8
         run: |
diff --git a/setup.py b/setup.py
index b9d3e8b..f948bd3 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name='yoda_eus',
-    version='1.9.0.dev',
+    version='2.0.0.dev',
     author='Utrecht University - ITS/RDMS department',
     author_email='yoda@uu.nl',
     url='https://uu.nl/rdm',
@@ -19,12 +19,12 @@
     install_requires=[
         "bcrypt==4.0.1",
         "email-validator==2.0.0",
-        "Flask==3.0.2",
-        "Flask-session==0.6.0",
-        "Flask-SQLAlchemy==3.0.3",
-        "Flask-wtf==1.2.1",
+        "Flask==3.1.0",
+        "flask-session==0.8.0",
+        "Flask-SQLAlchemy==3.1.1",
+        "Flask-WTF==1.2.2",
         "psycopg2-binary==2.9.10",
-        "requests==2.32.0",
-        "Werkzeug==3.0.3"
+        "requests==2.32.3",
+        "Werkzeug==3.1.3"
     ],
 )
diff --git a/yoda_eus/app.py b/yoda_eus/app.py
index 9febf0d..1800cf9 100644
--- a/yoda_eus/app.py
+++ b/yoda_eus/app.py
@@ -529,19 +529,19 @@ def process_reset_password_form(hash: str) -> Response:
         # Confirm activation to user
         return render_template("reset-password-successful.html", **params), 200
 
-    @ app.errorhandler(403)
+    @app.errorhandler(403)
     def access_forbidden(e: Exception) -> Response:
         return render_template('403.html'), 403
 
-    @ app.errorhandler(404)
+    @app.errorhandler(404)
     def page_not_found(e: Exception) -> Response:
         return render_template('404.html'), 404
 
-    @ app.errorhandler(500)
+    @app.errorhandler(500)
     def internal_error(e: Exception) -> Response:
         return render_template('500.html'), 500
 
-    @ app.after_request
+    @app.after_request
     def add_security_headers(response: Response) -> Response:
         """Add generic security headers."""  # noqa DAR101 DAR201
 
@@ -611,7 +611,7 @@ def static_loader() -> Optional[Response]:
 
         return None
 
-    @ app.url_defaults
+    @app.url_defaults
     def add_cache_buster(endpoint: str, values: Dict[str, str]) -> None:
         """Add cache buster to asset (static) URLs."""
         if endpoint.endswith("static"):
diff --git a/yoda_eus/tests/flask.test.cfg b/yoda_eus/tests/flask.test.cfg
index 43fd7ae..36083c9 100644
--- a/yoda_eus/tests/flask.test.cfg
+++ b/yoda_eus/tests/flask.test.cfg
@@ -4,6 +4,7 @@ YODA_EUS_FQDN       = 'eus.yoda.test'
 CSRF_TOKENS_ENABLED = 'false'
 API_SECRET          = 'dummy_api_secret'
 EUS_TITLE_TEXT      = 'Yoda External User Service'
+SESSION_TYPE        = 'filesystem'
 
 # Theming configuration
 YODA_THEME_PATH     = '/var/www/yoda/themes' # Path to location of themes