diff --git a/poetry.lock b/poetry.lock
index 18ca399..f3d8aff 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -249,18 +249,17 @@ dotenv = ["python-dotenv"]
 
 [[package]]
 name = "flask-cors"
-version = "3.0.10"
+version = "4.0.0"
 description = "A Flask extension adding a decorator for CORS support"
 optional = false
 python-versions = "*"
 files = [
-    {file = "Flask-Cors-3.0.10.tar.gz", hash = "sha256:b60839393f3b84a0f3746f6cdca56c1ad7426aa738b70d6c61375857823181de"},
-    {file = "Flask_Cors-3.0.10-py2.py3-none-any.whl", hash = "sha256:74efc975af1194fc7891ff5cd85b0f7478be4f7f59fe158102e91abb72bb4438"},
+    {file = "Flask-Cors-4.0.0.tar.gz", hash = "sha256:f268522fcb2f73e2ecdde1ef45e2fd5c71cc48fe03cffb4b441c6d1b40684eb0"},
+    {file = "Flask_Cors-4.0.0-py2.py3-none-any.whl", hash = "sha256:bc3492bfd6368d27cfe79c7821df5a8a319e1a6d5eab277a3794be19bdc51783"},
 ]
 
 [package.dependencies]
 Flask = ">=0.9"
-Six = "*"
 
 [[package]]
 name = "flask-restx"
@@ -842,17 +841,6 @@ files = [
     {file = "PyYAML-6.0.1.tar.gz", hash = "sha256:bfdf460b1736c775f2ba9f6a92bca30bc2095067b8a9d77876d1fad6cc3b4a43"},
 ]
 
-[[package]]
-name = "six"
-version = "1.16.0"
-description = "Python 2 and 3 compatibility utilities"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
-files = [
-    {file = "six-1.16.0-py2.py3-none-any.whl", hash = "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"},
-    {file = "six-1.16.0.tar.gz", hash = "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926"},
-]
-
 [[package]]
 name = "tomli"
 version = "2.0.1"
@@ -976,4 +964,4 @@ testing = ["big-O", "flake8 (<5)", "jaraco.functools", "jaraco.itertools", "more
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.7,<4"
-content-hash = "bc7a9cdd4dac51ef8a9bb30da437b8ed51ec609872feb69d386f7533658b915f"
+content-hash = "d4ec4e80405b0cf0dd07082422172b7e09b1b69cd3429e08abfa0405c02643e3"
diff --git a/pyproject.toml b/pyproject.toml
index 4c8a537..5b3be63 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -60,7 +60,7 @@ classifiers = [
 "Issues" = "https://github.com/daq-tools/wireviz-web/issues"
 
 [tool.poetry.dependencies]
-python = ">=3.7,<4"
+python = ">=3.7,<5"
 wireviz = "==0.3.2"
 flask = "<2.3"
 flask-restx = "<1.3"
@@ -69,7 +69,7 @@ werkzeug = "<3"
 # Conditionally installed for backward compatibility with older Python versions
 importlib_metadata              = { version = ">=3.3,<7", python = "<3.8" }
 click = "<9"
-Flask-Cors = "<4"
+Flask-Cors = "<5"
 
 [tool.poetry.dev-dependencies]
 poethepoet = "<1"