diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 7b1a761..e9a3471 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -9,7 +9,7 @@ dependencies = [
   "Flask-SQLAlchemy>=3.1.1",
   "python-dotenv>=1.0.1",
   "SQLAlchemy>=2.0.16",
-  "python-dateutil>=2.9.0",
+  "python-dateutil>=2.9.0.post0",
   "Authlib>=1.3.2",
   "requests>=2.32.3",
   "Flask-Caching>=2.3.0",
diff --git a/backend/requirements.txt b/backend/requirements.txt
index fa56c2a..858ffaa 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -5,7 +5,7 @@ Flask-Cors==4.0.1
 python-dotenv==1.0.1
 Pillow==11.1.0
 pillow-heif==0.21.0
-python-dateutil==2.9.0
+python-dateutil==2.9.0.post0
 pywebpush==2.3.0
 pyotp==2.9.0
 qrcode==7.4.2