diff --git a/requirements_dev.txt b/requirements_dev.txt
index 4a53d9d..d3d7324 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,4 +1,4 @@
-pip==9.0.1
+pip==21.1
 bumpversion==0.5.3
 wheel==0.29.0
 #watchdog==0.8.3