diff --git a/mailbox-app/pyproject.toml b/mailbox-app/pyproject.toml
index 61d8724..45c2512 100644
--- a/mailbox-app/pyproject.toml
+++ b/mailbox-app/pyproject.toml
@@ -31,7 +31,7 @@ dependencies = [
   "argon2-cffi==25.1.0",
   "bleach==6.4.0",
   "filelock==3.20.3",
-  "gunicorn==25.1.0",
+  "gunicorn==26.0.0",
   "mysqlclient==2.2.7",
   "python-dotenv==1.2.2",
   "whitenoise==6.11.0",
diff --git a/mailbox-app/requirements/base.txt b/mailbox-app/requirements/base.txt
index 2b8238d..d1123b2 100644
--- a/mailbox-app/requirements/base.txt
+++ b/mailbox-app/requirements/base.txt
@@ -2,7 +2,7 @@ Django==5.2.16
 argon2-cffi==25.1.0
 bleach==6.4.0
 filelock==3.20.3
-gunicorn==25.1.0
+gunicorn==26.0.0
 python-dotenv==1.2.2
 whitenoise==6.11.0
 
diff --git a/mailbox-app/requirements/constraints.txt b/mailbox-app/requirements/constraints.txt
index b8da6f3..e84de85 100644
--- a/mailbox-app/requirements/constraints.txt
+++ b/mailbox-app/requirements/constraints.txt
@@ -8,7 +8,7 @@ cffi==2.0.0
 coverage==7.13.3
 Django==5.2.16
 filelock==3.20.3
-gunicorn==25.1.0
+gunicorn==26.0.0
 packaging==26.2
 pip-audit==2.10.0
 pycparser==3.0
diff --git a/mailbox-app/requirements/locked.txt b/mailbox-app/requirements/locked.txt
index 9cd5655..3b95db7 100644
--- a/mailbox-app/requirements/locked.txt
+++ b/mailbox-app/requirements/locked.txt
@@ -6,7 +6,7 @@ bleach==6.4.0
 cffi==2.0.0
 Django==5.2.16
 filelock==3.20.3
-gunicorn==25.1.0
+gunicorn==26.0.0
 packaging==26.2
 pycparser==3.0
 python-dotenv==1.2.2