diff --git a/pyproject.toml b/pyproject.toml
index ee599fc..75a4262 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,13 +9,13 @@ requires-python = "~=3.13.0"
 app = [
   "flask~=3.1.2",
   "pydantic==2.9.2",
-  "gunicorn~=23.0.0",
+  "gunicorn~=25.3.0",
   "requests~=2.32.5",
   "pyjwt~=2.8.0",
   "cryptography~=42.0.0",
   "xmltodict>=1.0.2",
 ]
-sandbox = ["flask~=3.1.2", "gunicorn~=23.0.0"]
+sandbox = ["flask~=3.1.2", "gunicorn~=25.3.0"]
 dev = [
   "coverage==7.13.4",
   "pytest-cov==7.0.0",
diff --git a/uv.lock b/uv.lock
index b39dabd..f3d6da0 100644
--- a/uv.lock
+++ b/uv.lock
@@ -211,14 +211,14 @@ wheels = [
 
 [[package]]
 name = "gunicorn"
-version = "23.0.0"
+version = "25.3.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "packaging" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/34/72/9614c465dc206155d93eff0ca20d42e1e35afc533971379482de953521a4/gunicorn-23.0.0.tar.gz", hash = "sha256:f014447a0101dc57e294f6c18ca6b40227a4c90e9bdb586042628030cba004ec", size = 375031, upload-time = "2024-08-10T20:25:27.378Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/c4/f4/e78fa054248fab913e2eab0332c6c2cb07421fca1ce56d8fe43b6aef57a4/gunicorn-25.3.0.tar.gz", hash = "sha256:f74e1b2f9f76f6cd1ca01198968bd2dd65830edc24b6e8e4d78de8320e2fe889", size = 634883, upload-time = "2026-03-27T00:00:26.092Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/cb/7d/6dac2a6e1eba33ee43f318edbed4ff29151a49b5d37f080aad1e6469bca4/gunicorn-23.0.0-py3-none-any.whl", hash = "sha256:ec400d38950de4dfd418cff8328b2c8faed0edb0d517d3394e457c317908ca4d", size = 85029, upload-time = "2024-08-10T20:25:24.996Z" },
+    { url = "https://files.pythonhosted.org/packages/43/c8/8aaf447698c4d59aa853fd318eed300b5c9e44459f242ab8ead6c9c09792/gunicorn-25.3.0-py3-none-any.whl", hash = "sha256:cacea387dab08cd6776501621c295a904fe8e3b7aae9a1a3cbb26f4e7ed54660", size = 208403, upload-time = "2026-03-27T00:00:27.386Z" },
 ]
 
 [[package]]
@@ -264,7 +264,7 @@ sandbox = [
 app = [
     { name = "cryptography", specifier = "~=42.0.0" },
     { name = "flask", specifier = "~=3.1.2" },
-    { name = "gunicorn", specifier = "~=23.0.0" },
+    { name = "gunicorn", specifier = "~=25.3.0" },
     { name = "pydantic", specifier = "==2.9.2" },
     { name = "pyjwt", specifier = "~=2.8.0" },
     { name = "requests", specifier = "~=2.32.5" },
@@ -280,7 +280,7 @@ dev = [
 ]
 sandbox = [
     { name = "flask", specifier = "~=3.1.2" },
-    { name = "gunicorn", specifier = "~=23.0.0" },
+    { name = "gunicorn", specifier = "~=25.3.0" },
 ]
 
 [[package]]