diff --git a/requirements_dev.txt b/requirements_dev.txt
index 730b150..bf5db90 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,5 +1,5 @@
 -r requirements.txt
-pip==9.0.1
+pip==21.1
 bumpversion==0.5.3
 flake8==3.3.0
 coverage==4.4.1