diff --git a/poetry.lock b/poetry.lock
index fe889f6f..cc107c45 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1581,13 +1581,13 @@ pytest = "*"
 
 [[package]]
 name = "python-dateutil"
-version = "2.8.2"
+version = "2.9.0.post0"
 description = "Extensions to the standard Python datetime module"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
 files = [
-    {file = "python-dateutil-2.8.2.tar.gz", hash = "sha256:0123cacc1627ae19ddf3c27a5de5bd67ee4586fbdd6440d9748f8abb483d3e86"},
-    {file = "python_dateutil-2.8.2-py2.py3-none-any.whl", hash = "sha256:961d03dc3453ebbc59dbdea9e4e11c5651520a876d0f4db161e8674aae935da9"},
+    {file = "python-dateutil-2.9.0.post0.tar.gz", hash = "sha256:37dd54208da7e1cd875388217d5e00ebd4179249f90fb72437e91a35459a0ad3"},
+    {file = "python_dateutil-2.9.0.post0-py2.py3-none-any.whl", hash = "sha256:a8b2bc7bffae282281c8140a97d3aa9c14da0b136dfe83f850eea9a5f7470427"},
 ]
 
 [package.dependencies]
@@ -2012,4 +2012,4 @@ testing = ["big-O", "flake8 (<5)", "jaraco.functools", "jaraco.itertools", "more
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.9"
-content-hash = "c4d053689bddf900709dac87d8e6c90901b9e2524b9e46d7aee096d80bdceb5b"
+content-hash = "57ac1ed35c667c0c3422da49ba26bcf4b6e359d2f6422cc8edb3f921e7cc392f"
diff --git a/pyproject.toml b/pyproject.toml
index 7b6cddca..1a728ce0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ include = ["CHANGELOG.md"]
 
 [tool.poetry.dependencies]
 python = "^3.9"
-python-dateutil = "^2.8.2"
+python-dateutil = "^2.9.0"
 django = "^3.2.19"
 # might remove this once we find out how the jsonapi extras_require work
 django-cors-headers = "^4.3.0"