diff --git a/doc/dev-doc/requirements.txt b/doc/dev-doc/requirements.txt
index 928953b0e..0b39a9070 100644
--- a/doc/dev-doc/requirements.txt
+++ b/doc/dev-doc/requirements.txt
@@ -1,6 +1,7 @@
+urllib3<2
 sphinx==3.4.3
 sphinx-rtd-theme==0.5.2
 sphinxcontrib-bibtex==2.3.0
 breathe==4.30.0
 jinja2==3.0.1
 gitpython==3.1.18