diff --git a/doc/changelog.d/134.maintenance.md b/doc/changelog.d/134.maintenance.md
new file mode 100644
index 0000000000..2e2ef08cd1
--- /dev/null
+++ b/doc/changelog.d/134.maintenance.md
@@ -0,0 +1 @@
+Bump sphinx-markdown-builder from 0.6.6 to 0.6.8
diff --git a/pyproject.toml b/pyproject.toml
index ee6a1ac709..6d451c2e9d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -46,7 +46,7 @@ doc = [
     "sphinxcontrib-httpdomain==1.8.1",
     "sphinx-copybutton==0.5.2",
     "sphinx_design==0.6.1",
-    "sphinx-markdown-builder==0.6.6",
+    "sphinx-markdown-builder==0.6.8",
     "sphinxnotes-strike==1.2.1",
 ]
 tests = [