diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 5cf5c81a..626fb95c 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -32,7 +32,7 @@ dependencies = [
     "redis>=6.4.0",
     "starlette>=1.6.0",
     "streamlit>=1.63.0",
-    "stripe>=13.0.1",
+    "stripe>=15.6.1",
     "uvicorn>=0.52.4",
     "webauthn>=2.7.0",
 ]
diff --git a/backend/uv.lock b/backend/uv.lock
index 3724cbf7..98843702 100644
--- a/backend/uv.lock
+++ b/backend/uv.lock
@@ -173,7 +173,7 @@ requires-dist = [
     { name = "redis", specifier = ">=6.4.0" },
     { name = "starlette", specifier = ">=1.6.0" },
     { name = "streamlit", specifier = ">=1.63.0" },
-    { name = "stripe", specifier = ">=13.0.1" },
+    { name = "stripe", specifier = ">=15.6.1" },
     { name = "uvicorn", specifier = ">=0.52.4" },
     { name = "webauthn", specifier = ">=2.7.0" },
 ]
@@ -2214,15 +2214,15 @@ wheels = [
 
 [[package]]
 name = "stripe"
-version = "14.4.1"
+version = "15.6.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "requests" },
     { name = "typing-extensions" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/63/01/59d92650146c6340e333c22b8a238561b022e8641ba255298dfe46b4137d/stripe-14.4.1.tar.gz", hash = "sha256:e3eecfb336819326cd2ab9a93f98eb01b49c4d4d93c9d167a52a68ab99c19a88", size = 1473321, upload-time = "2026-03-06T22:59:45.822Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/1e/a6/02ea2b4e1b57913ae2e68801bf2168120bec97206782a781599339abfd64/stripe-15.6.1.tar.gz", hash = "sha256:9f3986aa960419041aba9c76191746bdf2c342c95892acfbf6edb500ab006d31", size = 1569005, upload-time = "2026-09-01T18:44:41.751Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/35/0f/547eab75052384a72771b396a484556e5636629c031e5eafa8dc27af89ed/stripe-14.4.1-py3-none-any.whl", hash = "sha256:d6722b985dc3b4d6da01ff4fa95a975d3694a89bba96895bf17aa858073ff2b8", size = 2116642, upload-time = "2026-03-06T22:59:43.72Z" },
+    { url = "https://files.pythonhosted.org/packages/a9/4b/cd2d7ad83a3f49300cb3cc69ae102de68de792035bf31b0383e1c6563ec3/stripe-15.6.1-py3-none-any.whl", hash = "sha256:b33e1ea76462d7289e5fe755a1132b82099151bfb31e961021655471e6d216bf", size = 2218765, upload-time = "2026-09-01T18:44:39.706Z" },
 ]
 
 [[package]]