diff --git a/.github/workflows/test_suite.yml b/.github/workflows/test_suite.yml
index 1147739..d0d5363 100644
--- a/.github/workflows/test_suite.yml
+++ b/.github/workflows/test_suite.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: [ '3.8', '3.9', '3.10', '3.11']
+        python-version: [ '3.8', '3.9', '3.10', '3.11','3.12', '3.13', '3.14' ]
 
     steps:
       - uses: actions/checkout@v4
diff --git a/doc/faq.rst b/doc/faq.rst
index 38782f8..d07819c 100644
--- a/doc/faq.rst
+++ b/doc/faq.rst
@@ -209,7 +209,7 @@ Please follow this simple procedure:
    * If it is related to your system or your Python installation, you will need to ask some
      help from your local system administrator or your IT department so they could
      guide you toward a clean installation. Tell them that you wanted "to use the graphical
-     user interface of IsoCor, a Python 3.5 software" and what you did so far (installation),
+     user interface of IsoCor, a Python 3.7 software" and what you did so far (installation),
      give them the traceback and a link toward the documentation. They should know what to do.
    * If you believe the problem is in IsoCor or that your local system administrator
      told you so, then you probably have found a bug! We would greatly appreciate
diff --git a/doc/quickstart.rst b/doc/quickstart.rst
index 9f1f78e..4b1e810 100644
--- a/doc/quickstart.rst
+++ b/doc/quickstart.rst
@@ -7,7 +7,7 @@ Quick start
 Installation
 ------------------------------------------------
 
-IsoCor requires Python 3.5 or higher. If you do not have a Python environment
+IsoCor requires Python 3.7 or higher. If you do not have a Python environment
 configured on your computer, we recommend that you follow the instructions
 from `Anaconda <https://www.anaconda.com/download/>`_.
 
diff --git a/isocor/__init__.py b/isocor/__init__.py
index 233ca47..1dd7be0 100644
--- a/isocor/__init__.py
+++ b/isocor/__init__.py
@@ -5,7 +5,7 @@
 """
 
 # Version number MUST be maintained here (x.y.z format)
-__version__ = '2.2.3'
+__version__ = '2.2.4'
 
 from isocor.mscorrectors import MetaboliteCorrectorFactory
 from isocor.mscorrectors import LowResMetaboliteCorrector, HighResMetaboliteCorrector
diff --git a/isocor/ui/isocordb.py b/isocor/ui/isocordb.py
index 2f18ee4..cde9e6a 100644
--- a/isocor/ui/isocordb.py
+++ b/isocor/ui/isocordb.py
@@ -5,7 +5,8 @@
 from decimal import Decimal
 import shutil
 import numpy as np
-import pkg_resources
+# import pkg_resources
+import importlib.resources
 
 
 class EnvComputing(object):
@@ -18,7 +19,8 @@ def __init__(self, home=expanduser('~')):
         self.home = Path(home)
         self.default_db = Path(self.home, 'isocordb')
         self.db_path = self.default_db
-        self.example_db = pkg_resources.resource_filename('isocor', 'data/')
+        # self.example_db = pkg_resources.resource_filename('isocor', 'data/')
+        self.example_db = importlib.resources.files('isocor').joinpath('data')
 
     def initializeDB(self):
         # if db files don't exist, copy the example folder
diff --git a/setup.cfg b/setup.cfg
index c7ac906..18a4732 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -14,6 +14,8 @@ classifiers =
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
+    Programming Language :: Python :: 3.13
+    Programming Language :: Python :: 3.14
     License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)
     Operating System :: OS Independent
     Intended Audience :: Science/Research
diff --git a/tox.ini b/tox.ini
index 11b14a0..bcb267a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 env_list =
-    py36, py37, py38, py39, py310, py311
+    3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13, 3.14
 minversion = 4.4.8
 
 [testenv]