diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 35e7e4b..cfaf38b 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -6,7 +6,7 @@ requires-python = ">=3.10,<4.0"
 dependencies = [
     "fastapi[standard]<1.0.0,>=0.114.2",
     "python-multipart<1.0.0,>=0.0.7",
-    "tenacity<9.0.0,>=8.2.3",
+    "tenacity>=9.1.4,<10.0.0",
     "pydantic>2.0",
     "httpx<1.0.0,>=0.25.1",
     "psycopg[binary]<4.0.0,>=3.1.13",
diff --git a/uv.lock b/uv.lock
index 6652a70..5c26919 100644
--- a/uv.lock
+++ b/uv.lock
@@ -517,7 +517,7 @@ name = "exceptiongroup"
 version = "1.3.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "typing-extensions", marker = "python_full_version < '3.13'" },
+    { name = "typing-extensions" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/50/79/66800aadf48771f6b62f7eb014e352e5d06856655206165d775e675a02c9/exceptiongroup-1.3.1.tar.gz", hash = "sha256:8b412432c6055b0b7d14c310000ae93352ed6754f70fa8f7c34141f91c4e3219", size = 30371, upload-time = "2025-11-21T23:01:54.787Z" }
 wheels = [
@@ -985,7 +985,7 @@ requires-dist = [
     { name = "pydantic-settings", specifier = ">=2.2.1,<3.0.0" },
     { name = "pyjwt", specifier = ">=2.11.0,<3.0.0" },
     { name = "python-multipart", specifier = ">=0.0.7,<1.0.0" },
-    { name = "tenacity", specifier = ">=8.2.3,<9.0.0" },
+    { name = "tenacity", specifier = ">=9.1.4,<10.0.0" },
 ]
 
 [package.metadata.requires-dev]
@@ -1691,11 +1691,11 @@ wheels = [
 
 [[package]]
 name = "tenacity"
-version = "8.5.0"
+version = "9.1.4"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/a3/4d/6a19536c50b849338fcbe9290d562b52cbdcf30d8963d3588a68a4107df1/tenacity-8.5.0.tar.gz", hash = "sha256:8bc6c0c8a09b31e6cad13c47afbed1a567518250a9a171418582ed8d9c20ca78", size = 47309, upload-time = "2024-07-05T07:25:31.836Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/47/c6/ee486fd809e357697ee8a44d3d69222b344920433d3b6666ccd9b374630c/tenacity-9.1.4.tar.gz", hash = "sha256:adb31d4c263f2bd041081ab33b498309a57c77f9acf2db65aadf0898179cf93a", size = 49413, upload-time = "2026-02-07T10:45:33.841Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/d2/3f/8ba87d9e287b9d385a02a7114ddcef61b26f86411e121c9003eb509a1773/tenacity-8.5.0-py3-none-any.whl", hash = "sha256:b594c2a5945830c267ce6b79a166228323ed52718f30302c1359836112346687", size = 28165, upload-time = "2024-07-05T07:25:29.591Z" },
+    { url = "https://files.pythonhosted.org/packages/d7/c1/eb8f9debc45d3b7918a32ab756658a0904732f75e555402972246b0b8e71/tenacity-9.1.4-py3-none-any.whl", hash = "sha256:6095a360c919085f28c6527de529e76a06ad89b23659fa881ae0649b867a9d55", size = 28926, upload-time = "2026-02-07T10:45:32.24Z" },
 ]
 
 [[package]]