diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2aa1f98c721474b2f4dd3f2a1786948e8a4cb5dd..d95c4620d281693da9e69143c06db82e5796ac14 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -70,7 +70,7 @@ unittest_py3.7:
   script: &python_test_script
     # Python docker has problems with tox and pip so use plain pytest here
     - touch ~/.pylinkahead.ini
-    - pip install nose pytest pytest-cov python-dateutil jsonschema>=4.4.0
+    - pip install pynose pytest pytest-cov jsonschema>=4.4.0 setuptools
     - pip install .
     - python -m pytest unittests
 
@@ -108,6 +108,22 @@ unittest_py3.11:
   image: python:3.11
   script: *python_test_script
 
+unittest_py3.12:
+  tags: [ docker ]
+  stage: test
+  needs: [ ]
+  image: python:3.12
+  script: *python_test_script
+
+unittest_py3.13:
+  allow_failure: true
+  tags: [ docker ]
+  stage: test
+  needs: [ ]
+  image: python:3.13-rc
+  script: *python_test_script
+
+
 # Trigger building of server image and integration tests
 trigger_build:
   stage: deploy
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e2a2501a9ad3c61baea00717c7306f1c35af036..39663cc746c2ff4192d185f3fb303f62e7ef1ac5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added ###
 
+* Support for Python 3.12
+
 ### Changed ###
 
 ### Deprecated ###
@@ -17,6 +19,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed ###
 
+* [#104](https://gitlab.com/linkahead/linkahead-pylib/-/issues/104) Selecting
+  parts of a `Container` with a `slice` used to return a `list` object instead
+  of a `Container`, removing all useful methods of the `Container` class. This
+  has been fixed and using a `slice` such as `[:2]` now returns a new
+  `Container`.
+
 ### Security ###
 
 ### Documentation ###
diff --git a/src/linkahead/common/models.py b/src/linkahead/common/models.py
index ea537ffe8c44a7a7fb79c2d4080b63f9b3da2284..031afe4e514908e81e5980d14244dec7390cf86c 100644
--- a/src/linkahead/common/models.py
+++ b/src/linkahead/common/models.py
@@ -4,9 +4,10 @@
 #
 # Copyright (C) 2018 Research Group Biomedical Physics,
 # Max-Planck-Institute for Dynamics and Self-Organization Göttingen
-# Copyright (C) 2020-2023 Indiscale GmbH <info@indiscale.com>
+# Copyright (C) 2020-2024 IndiScale GmbH <info@indiscale.com>
 # Copyright (C) 2020-2023 Florian Spreckelsen <f.spreckelsen@indiscale.com>
 # Copyright (C) 2020-2022 Timm Fitschen <t.fitschen@indiscale.com>
+# Copyright (C) 2024 Joscha Schmiedt <joscha@schmiedt.dev>
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
@@ -3001,6 +3002,14 @@ class Container(list):
     def __repr__(self):
         return xml2str(self.to_xml())
 
+    def __getitem__(self, key):
+        self_as_list_slice = super().__getitem__(key)
+        if isinstance(self_as_list_slice, list):
+            # Construct new Container from list slice
+            return Container().extend(self_as_list_slice)
+        else:
+            return self_as_list_slice
+
     @staticmethod
     def from_xml(xml_str):
         """Creates a Container from the given xml string.
diff --git a/tox.ini b/tox.ini
index 49c0c74d4b14303ac924dbdb10c0323a4b5e780f..9a862f698573c864921ab9998d1a6a8a07978126 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist=py37, py38, py39, py310, py311, py312
+envlist=py37, py38, py39, py310, py311, py312, py313
 skip_missing_interpreters = true
 
 [testenv]
@@ -19,3 +19,5 @@ max-line-length=100
 testpaths = unittests
 xfail_strict = True
 addopts = -x -vv --cov=caosdb
+pythonpath = src
+
diff --git a/unittests/test_container.py b/unittests/test_container.py
index 4cd8fefcaefee9fe6fdc5857805353227b493dfb..c3a60140d43383c81f03c38c9dd5cc7779bc77ba 100644
--- a/unittests/test_container.py
+++ b/unittests/test_container.py
@@ -5,7 +5,8 @@
 # This file is a part of the LinkAhead Project.
 #
 # Copyright (C) 2020 Timm Fitschen <t.fitschen@indiscale.com>
-# Copyright (C) 2020 IndiScale GmbH <info@indiscale.com>
+# Copyright (C) 2024 Joscha Schmiedt <joscha@schmiedt.dev>
+# Copyright (C) 2020-2024 IndiScale GmbH <info@indiscale.com>
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
@@ -178,3 +179,23 @@ def test_container_deletion_with_references():
     assert len(deps14a) == 1 and deps14a.pop() == -1
     assert len(deps14b) == 1 and deps14b.pop() == -1
     assert len(deps15) == 1 and deps15.pop() == -1
+
+
+def test_container_slicing():
+    cont = db.Container()
+    cont.extend([db.Record(name=f"TestRec{ii+1}") for ii in range(5)])
+    assert isinstance(cont, db.common.models.Container)
+    container_slice = cont[:2]
+    assert isinstance(container_slice, db.common.models.Container), \
+        f"Container slice should be Container, was {type(container_slice)}"
+    for element in container_slice:
+        assert isinstance(element, db.Record), \
+            f"element in slice was not Record, but {type(element)}"
+    assert len(container_slice) == 2
+    assert cont[-1].name == "TestRec5"
+
+    with pytest.raises(TypeError):
+        cont["stringkey"]
+
+    with pytest.raises(TypeError):
+        cont[[0, 2, 3]]