diff --git a/requirements/dev.txt b/requirements/dev.txt
index 1fa93bf1..99014e94 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -121,7 +121,7 @@ toml==0.10.2
     #   tox
 tox==3.22.0
     # via -r requirements/dev.in
-urllib3==1.26.3
+urllib3==1.26.4
     # via requests
 virtualenv==20.4.2
     # via
diff --git a/requirements/docs.txt b/requirements/docs.txt
index d986bace..08d3bcb0 100644
--- a/requirements/docs.txt
+++ b/requirements/docs.txt
@@ -66,7 +66,7 @@ sphinxcontrib-qthelp==1.0.3
     # via sphinx
 sphinxcontrib-serializinghtml==1.1.4
     # via sphinx
-urllib3==1.26.3
+urllib3==1.26.4
     # via requests
 
 # The following packages are considered to be unsafe in a requirements file: