diff --git a/docs/changelog/556.packaging.rst b/docs/changelog/556.packaging.rst
new file mode 100644
index 00000000..a1b619bb
--- /dev/null
+++ b/docs/changelog/556.packaging.rst
@@ -0,0 +1 @@
+Exclude sphinx-llm 1.1.0 from documentation dependencies because its Markdown builder emits unknown-node warnings.
diff --git a/pyproject.toml b/pyproject.toml
index 3dcda00f..0c555a13 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -80,7 +80,7 @@ docs = [
   "sphinx-autodoc-typehints>=3.9.2",
   "sphinx-copybutton>=0.5.2",
   "sphinx-design>=0.7",
-  "sphinx-llm>=0.4.1,<1.1",
+  "sphinx-llm>=0.4.1,!=1.1",
   "sphinx-sitemap>=2.9",
   "sphinxcontrib-mermaid>=2",
   "sphinxcontrib-towncrier>=0.5.0a0",