diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 6601956a..64a81e96 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -29,7 +29,7 @@ dependencies = [
     "pytest>=9.1.1",
     "pytest-asyncio>=1.4.0",
     "python-dotenv>=1.2.3",
-    "redis>=6.4.0",
+    "redis>=8.1.0",
     "starlette>=1.6.0",
     "streamlit>=1.63.0",
     "stripe>=13.0.1",
diff --git a/backend/uv.lock b/backend/uv.lock
index 6ed1f72b..9c9d6f28 100644
--- a/backend/uv.lock
+++ b/backend/uv.lock
@@ -170,7 +170,7 @@ requires-dist = [
     { name = "pytest", specifier = ">=9.1.1" },
     { name = "pytest-asyncio", specifier = ">=1.4.0" },
     { name = "python-dotenv", specifier = ">=1.2.3" },
-    { name = "redis", specifier = ">=6.4.0" },
+    { name = "redis", specifier = ">=8.1.0" },
     { name = "starlette", specifier = ">=1.6.0" },
     { name = "streamlit", specifier = ">=1.63.0" },
     { name = "stripe", specifier = ">=13.0.1" },
@@ -1881,11 +1881,11 @@ wheels = [
 
 [[package]]
 name = "redis"
-version = "7.4.0"
+version = "8.1.0"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/7b/7f/3759b1d0d72b7c92f0d70ffd9dc962b7b7b5ee74e135f9d7d8ab06b8a318/redis-7.4.0.tar.gz", hash = "sha256:64a6ea7bf567ad43c964d2c30d82853f8df927c5c9017766c55a1d1ed95d18ad", size = 4943913, upload-time = "2026-03-24T09:14:37.53Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/a8/99/604f0b666d4c616d891cf77ebb9db6bb21601344c051aebf1b72b9ff915f/redis-8.1.0.tar.gz", hash = "sha256:6e1a19beef9225c83efd689c7e6b7da2d5215b1f42cd13b7fc3714d0a09c7b25", size = 5254356, upload-time = "2026-07-30T08:51:00.269Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/74/3a/95deec7db1eb53979973ebd156f3369a72732208d1391cd2e5d127062a32/redis-7.4.0-py3-none-any.whl", hash = "sha256:a9c74a5c893a5ef8455a5adb793a31bb70feb821c86eccb62eebef5a19c429ec", size = 409772, upload-time = "2026-03-24T09:14:35.968Z" },
+    { url = "https://files.pythonhosted.org/packages/66/9d/c5731f6e3608663d4d3656fd8d3aecee8b509c3082818f5a13eae925baea/redis-8.1.0-py3-none-any.whl", hash = "sha256:a4fe1aac3d3b3cc791d4b3d5931c5a956045dc951ee74d1c913ee3ac4d2ee9fb", size = 560618, upload-time = "2026-07-30T08:50:58.497Z" },
 ]
 
 [[package]]