diff --git a/requirements/docs.txt b/requirements/docs.txt
index a2d20bdeb..ce0f77c95 100644
--- a/requirements/docs.txt
+++ b/requirements/docs.txt
@@ -4,7 +4,7 @@ sphinx>=4.2.0, <8.0.0
 sphinx-autodoc-typehints>=1.12.0, <1.21  # limited due to https://github.com/tox-dev/sphinx-autodoc-typehints/issues/260
 sphinx-rtd-theme>=1.0.0, <2.0.0
 myst-parser>=1.0, <3.0
-sphinxcontrib-apidoc>=0.3.0, <0.5.0
+sphinxcontrib-apidoc>=0.3.0, <0.6.0
 nbsphinx>=0.8.5, <0.10.0
 sphinx_design==0.5.0  # Pinning for now as sphinx_design is v.new and still in flux.
 ipykernel>=5.1.0, <7.0.0 # required for executing notebooks via nbsphinx