diff --git a/poetry.lock b/poetry.lock
index 09000bddc..f768621f8 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -2609,22 +2609,19 @@ files = [
 
 [[package]]
 name = "marshmallow"
-version = "3.26.1"
+version = "4.0.0"
 description = "A lightweight library for converting complex datatypes to and from native Python datatypes."
 optional = false
 python-versions = ">=3.9"
 groups = ["main"]
 files = [
-    {file = "marshmallow-3.26.1-py3-none-any.whl", hash = "sha256:3350409f20a70a7e4e11a27661187b77cdcaeb20abca41c1454fe33636bea09c"},
-    {file = "marshmallow-3.26.1.tar.gz", hash = "sha256:e6d8affb6cb61d39d26402096dc0aee12d5a26d490a121f118d2e81dc0719dc6"},
+    {file = "marshmallow-4.0.0-py3-none-any.whl", hash = "sha256:e7b0528337e9990fd64950f8a6b3a1baabed09ad17a0dfb844d701151f92d203"},
+    {file = "marshmallow-4.0.0.tar.gz", hash = "sha256:3b6e80aac299a7935cfb97ed01d1854fb90b5079430969af92118ea1b12a8d55"},
 ]
 
-[package.dependencies]
-packaging = ">=17.0"
-
 [package.extras]
 dev = ["marshmallow[tests]", "pre-commit (>=3.5,<5.0)", "tox"]
-docs = ["autodocsumm (==0.2.14)", "furo (==2024.8.6)", "sphinx (==8.1.3)", "sphinx-copybutton (==0.5.2)", "sphinx-issues (==5.0.0)", "sphinxext-opengraph (==0.9.1)"]
+docs = ["autodocsumm (==0.2.14)", "furo (==2024.8.6)", "sphinx (==8.2.3)", "sphinx-copybutton (==0.5.2)", "sphinx-issues (==5.0.1)", "sphinxext-opengraph (==0.10.0)"]
 tests = ["pytest", "simplejson"]
 
 [[package]]
@@ -5555,4 +5552,4 @@ cffi = ["cffi (>=1.11)"]
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.12.2"
-content-hash = "4ad2256f4a9301cf8421e5da16cc7ca14be9c49d3c79b1b1799dd51ba7dc4a7f"
+content-hash = "d11b3a02918ad3ffe64c1d869a8962af06735e5f76c7a6bb1f656be605174c1f"
diff --git a/pyproject.toml b/pyproject.toml
index 067989803..e298b5744 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,7 +36,7 @@ gunicorn = {version = "==23.0.0", extras = ["eventlet"]}
 iso8601 = "==2.1.0"
 jsonschema = {version = "==4.23.0", extras = ["format"]}
 lxml = "==5.3.1"
-marshmallow = "==3.26.1"
+marshmallow = "==4.0.0"
 marshmallow-sqlalchemy = "==1.0.0"
 newrelic = "*"
 notifications-python-client = "==10.0.0"