diff --git a/docs/requirements.txt b/docs/requirements.txt
index 0829e34b..c9e8c654 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -26,4 +26,4 @@ sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.2
 sphinxcontrib-serializinghtml==1.1.3
 stevedore==1.31.0
-urllib3==1.26.5
+urllib3==1.25.6