diff --git a/requirements-read-the-docs.txt b/requirements-read-the-docs.txt
index 9c0cadd..c25b4fb 100644
--- a/requirements-read-the-docs.txt
+++ b/requirements-read-the-docs.txt
@@ -1,4 +1,5 @@
 git+https://github.com/crossnox/m2r@dev#egg=m2r  # See https://github.com/sphinx-doc/sphinx/issues/7420
+mistune<2  # See https://github.com/Azure/azure-sdk-for-python/issues/22019
 sphinx<3  # See https://github.com/sphinx-doc/sphinx/issues/7795
 sphinx_autodoc_typehints