diff --git a/sdks/blue-krill/poetry.lock b/sdks/blue-krill/poetry.lock
index 890dd518..780f6d2f 100644
--- a/sdks/blue-krill/poetry.lock
+++ b/sdks/blue-krill/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.1.3 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.2.1 and should not be changed by hand.
 
 [[package]]
 name = "amqp"
@@ -45,38 +45,6 @@ typing-extensions = {version = ">=4", markers = "python_version < \"3.11\""}
 [package.extras]
 tests = ["mypy (>=0.800)", "pytest", "pytest-asyncio"]
 
-[[package]]
-name = "atomicwrites"
-version = "1.4.1"
-description = "Atomic file writes."
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-groups = ["dev"]
-markers = "sys_platform == \"win32\""
-files = [
-    {file = "atomicwrites-1.4.1.tar.gz", hash = "sha256:81b2c9071a49367a7f770170e5eec8cb66567cfbbc8c73d20ce5ca4a8d71cf11"},
-]
-
-[[package]]
-name = "attrs"
-version = "24.2.0"
-description = "Classes Without Boilerplate"
-optional = false
-python-versions = ">=3.7"
-groups = ["dev"]
-files = [
-    {file = "attrs-24.2.0-py3-none-any.whl", hash = "sha256:81921eb96de3191c8258c199618104dd27ac608d9366f5e35d011eae1867ede2"},
-    {file = "attrs-24.2.0.tar.gz", hash = "sha256:5cfb1b9148b5b086569baec03f20d7b6bf3bcacc9a42bebf87ffaaca362f6346"},
-]
-
-[package.extras]
-benchmark = ["cloudpickle ; platform_python_implementation == \"CPython\"", "hypothesis", "mypy (>=1.11.1) ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\"", "pympler", "pytest (>=4.3.0)", "pytest-codspeed", "pytest-mypy-plugins ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\" and python_version < \"3.13\"", "pytest-xdist[psutil]"]
-cov = ["cloudpickle ; platform_python_implementation == \"CPython\"", "coverage[toml] (>=5.3)", "hypothesis", "mypy (>=1.11.1) ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\"", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\" and python_version < \"3.13\"", "pytest-xdist[psutil]"]
-dev = ["cloudpickle ; platform_python_implementation == \"CPython\"", "hypothesis", "mypy (>=1.11.1) ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\"", "pre-commit", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\" and python_version < \"3.13\"", "pytest-xdist[psutil]"]
-docs = ["cogapp", "furo", "myst-parser", "sphinx", "sphinx-notfound-page", "sphinxcontrib-towncrier", "towncrier (<24.7)"]
-tests = ["cloudpickle ; platform_python_implementation == \"CPython\"", "hypothesis", "mypy (>=1.11.1) ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\"", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\" and python_version < \"3.13\"", "pytest-xdist[psutil]"]
-tests-mypy = ["mypy (>=1.11.1) ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\"", "pytest-mypy-plugins ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\" and python_version < \"3.13\""]
-
 [[package]]
 name = "billiard"
 version = "4.2.1"
@@ -652,6 +620,25 @@ files = [
 [package.dependencies]
 django = ">=3.0"
 
+[[package]]
+name = "exceptiongroup"
+version = "1.3.1"
+description = "Backport of PEP 654 (exception groups)"
+optional = false
+python-versions = ">=3.7"
+groups = ["dev"]
+markers = "python_version < \"3.11\""
+files = [
+    {file = "exceptiongroup-1.3.1-py3-none-any.whl", hash = "sha256:a7a39a3bd276781e98394987d3a5701d0c4edffb633bb7a5144577f82c773598"},
+    {file = "exceptiongroup-1.3.1.tar.gz", hash = "sha256:8b412432c6055b0b7d14c310000ae93352ed6754f70fa8f7c34141f91c4e3219"},
+]
+
+[package.dependencies]
+typing-extensions = {version = ">=4.6.0", markers = "python_version < \"3.13\""}
+
+[package.extras]
+test = ["pytest (>=6)"]
+
 [[package]]
 name = "filelock"
 version = "3.16.1"
@@ -1360,28 +1347,26 @@ tests = ["coverage[toml] (==5.0.4)", "pytest (>=6.0.0,<7.0.0)"]
 
 [[package]]
 name = "pytest"
-version = "6.2.5"
+version = "7.4.4"
 description = "pytest: simple powerful testing with Python"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.7"
 groups = ["dev"]
 files = [
-    {file = "pytest-6.2.5-py3-none-any.whl", hash = "sha256:7310f8d27bc79ced999e760ca304d69f6ba6c6649c0b60fb0e04a4a77cacc134"},
-    {file = "pytest-6.2.5.tar.gz", hash = "sha256:131b36680866a76e6781d13f101efb86cf674ebb9762eb70d3082b6f29889e89"},
+    {file = "pytest-7.4.4-py3-none-any.whl", hash = "sha256:b090cdf5ed60bf4c45261be03239c2c1c22df034fbffe691abe93cd80cea01d8"},
+    {file = "pytest-7.4.4.tar.gz", hash = "sha256:2cf0005922c6ace4a3e2ec8b4080eb0d9753fdc93107415332f50ce9e7994280"},
 ]
 
 [package.dependencies]
-atomicwrites = {version = ">=1.0", markers = "sys_platform == \"win32\""}
-attrs = ">=19.2.0"
 colorama = {version = "*", markers = "sys_platform == \"win32\""}
+exceptiongroup = {version = ">=1.0.0rc8", markers = "python_version < \"3.11\""}
 iniconfig = "*"
 packaging = "*"
 pluggy = ">=0.12,<2.0"
-py = ">=1.8.2"
-toml = "*"
+tomli = {version = ">=1.0.0", markers = "python_version < \"3.11\""}
 
 [package.extras]
-testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
+testing = ["argcomplete", "attrs (>=19.2.0)", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "setuptools", "xmlschema"]
 
 [[package]]
 name = "pytest-django"
@@ -1632,7 +1617,7 @@ version = "0.10.2"
 description = "Python Library for Tom's Obvious, Minimal Language"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
-groups = ["main", "dev"]
+groups = ["main"]
 files = [
     {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
     {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
@@ -2068,4 +2053,4 @@ files = [
 [metadata]
 lock-version = "2.1"
 python-versions = ">=3.9,<3.12"
-content-hash = "ba785434dd945eaabbb33089226006ccdfc9751ae334ffa7cff66b7092c43f95"
+content-hash = "d1d488e197f387776037ad60fcbc1fc6466f3c828e4234ab3a818cfa4062ab25"
diff --git a/sdks/blue-krill/pyproject.toml b/sdks/blue-krill/pyproject.toml
index a9ae8c16..7488f9e3 100644
--- a/sdks/blue-krill/pyproject.toml
+++ b/sdks/blue-krill/pyproject.toml
@@ -50,7 +50,7 @@ moto = "^2.3.2"
 django-rest-framework = "^0.1.0"
 celery = "^5.0.5"
 # pytest
-pytest = "^6.2.2"
+pytest = ">=7,<8"
 pytest-django = "^4.1.0"
 # mypy
 mypy = "^1.19.0"
diff --git a/sdks/blue-krill/tests/storages/conftest.py b/sdks/blue-krill/tests/storages/conftest.py
index e37a54b4..09c3c9e7 100644
--- a/sdks/blue-krill/tests/storages/conftest.py
+++ b/sdks/blue-krill/tests/storages/conftest.py
@@ -15,23 +15,25 @@
 # We undertake not to change the open source license (MIT license) applicable
 # to the current version of the project delivered to anyone in the future.
 
-import tempfile as _tempfile_
+from tempfile import NamedTemporaryFile
 from pathlib import Path
 from typing import Callable, Generator, Optional
 
 import pytest
 
-
 @pytest.fixture
 def mktemp() -> Generator[Callable[..., Path], None, None]:
     files = []
 
     def core(content: Optional[str] = None):
-        filepath = Path(_tempfile_.mktemp())
-        files.append(filepath)
-        if content:
-            with open(filepath, mode="w") as fh:
+        if content is not None:
+            with NamedTemporaryFile(mode="w", delete=False) as fh:
                 fh.write(content)
+                filepath = Path(fh.name)
+        else:
+            with NamedTemporaryFile(delete=False) as fh:
+                filepath = Path(fh.name)
+        files.append(filepath)
         return filepath
 
     yield core