diff --git a/pyproject.toml b/pyproject.toml
index 94c6d96..9153795 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ dev = [
 # Material for MkDocs 9.x targets MkDocs 1.x; avoid resolving an incompatible
 # future MkDocs 2 release in documentation and CI environments.
 docs = ["mkdocs>=1.5,<2", "mkdocs-material>=9.5"]
-notebooks = ["jupyter>=1.0", "nbformat>=5.11.0", "nbclient>=0.10", "ipykernel>=6.29"]
+notebooks = ["jupyter>=1.0", "nbformat>=5.11.1", "nbclient>=0.10", "ipykernel>=6.29"]
 
 [project.scripts]
 quantlab = "quantlab.cli:app"
diff --git a/uv.lock b/uv.lock
index 52f8e09..18e6cde 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1604,7 +1604,7 @@ wheels = [
 
 [[package]]
 name = "nbformat"
-version = "5.11.0"
+version = "5.11.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "fastjsonschema" },
@@ -1612,9 +1612,9 @@ dependencies = [
     { name = "jupyter-core" },
     { name = "traitlets" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/b2/fd/80f407a9525bc5bd9865e5c37db3b78867fa43217f8aac5eab22b5f028b3/nbformat-5.11.0.tar.gz", hash = "sha256:7dbaed4a69cae28c2b4d44ab7430a6af4544fb89455023f6f21550be757b60c8", size = 151822, upload-time = "2026-08-06T12:29:55.597Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/31/72/b3446efab8756e7df4b8ec587f8e611cb5a7249e4323db480802f1d3be04/nbformat-5.11.1.tar.gz", hash = "sha256:32d4521c68c6e7d5b29c76defaeed9f42ea733142b9b19f88277ce10390b9c4d", size = 147775, upload-time = "2026-08-17T08:10:51.942Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/be/4a/0eece9dad5e73230ca972f7bc29456ce7d74772f123d401fcf67379008f7/nbformat-5.11.0-py3-none-any.whl", hash = "sha256:f70a17f591a9ccd1c601d5e61a4b20972703926df0ba42458ce14bf575766bb6", size = 79820, upload-time = "2026-08-06T12:29:54.178Z" },
+    { url = "https://files.pythonhosted.org/packages/1a/69/ee613f74085ca7103f79cd08d579c4f3177d1d26e5d3d9528d2d6536a707/nbformat-5.11.1-py3-none-any.whl", hash = "sha256:cc6698fa75f4fab8755ead786317815f13a6fee3b53311c0abb1a8b51d52f7ec", size = 79849, upload-time = "2026-08-17T08:10:50.18Z" },
 ]
 
 [[package]]
@@ -2378,7 +2378,7 @@ requires-dist = [
     { name = "mkdocs-material", marker = "extra == 'docs'", specifier = ">=9.5" },
     { name = "mypy", marker = "extra == 'dev'", specifier = ">=2.3" },
     { name = "nbclient", marker = "extra == 'notebooks'", specifier = ">=0.10" },
-    { name = "nbformat", marker = "extra == 'notebooks'", specifier = ">=5.11.0" },
+    { name = "nbformat", marker = "extra == 'notebooks'", specifier = ">=5.11.1" },
     { name = "numpy", specifier = ">=2.5.2" },
     { name = "optuna", marker = "extra == 'extra'", specifier = ">=3.5" },
     { name = "pandas", specifier = ">=2.1" },