diff --git a/doc/requirements.txt b/doc/requirements.txt
index bc5a536fd42d2ca80135cb96090a82d94b4bffa2..9cf2140f64ac888a0d37bdfd908418cf4a973808 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -6,3 +6,5 @@ sphinx_rtd_theme==1.0.0
 gitpython
 autodoc_pydantic==1.6.2
 sphinx-autoapi
+# Temporary pin urllib3 to circumvent compatibility issues, see e.g. https://gitlab.cern.ch/lhcb/Moore/-/issues/567
+urllib3<=2.0