diff --git a/docs/requirements.txt b/docs/requirements.txt
index 834b1bb..bf1bde0 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,7 +1,8 @@
-breathe>=4.9.1
-colorama
-docutils==0.16
 sphinx>=3.5.1
+breathe>=4.9.1
+urllib3==1.26.15
+docutils==0.16
+colorama
 sphinx_rtd_theme>=1.0.0
 sphinx-tabs
 sphinxcontrib-svg2pdfconverter