diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 6067fa675..788480c64 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -116,6 +116,8 @@ possible, run `poetry lock --no-update`.
 - `make update-resources`
 - `protokolo compile -f version vx.y.z`
 - Alter changelog
+- `poetry lock` (otherwise documentation won't generate;
+  <https://github.com/readthedocs/readthedocs.org/issues/11624>)
 - Do some final tweaks/bugfixes (and alter changelog)
 - `make test-release`
 - `pip install -i https://test.pypi.org/simple reuse` and test the package.