diff --git a/docs/requirements_dev.txt b/docs/requirements_dev.txt
index 18ba94b..39d4edf 100644
--- a/docs/requirements_dev.txt
+++ b/docs/requirements_dev.txt
@@ -1,4 +1,4 @@
-pip==9.0.1
+pip==21.1
 bumpversion==0.5.3
 wheel==0.30.0
 watchdog==0.8.3