diff --git a/requirements_dev.txt b/requirements_dev.txt
index ebfb51c..1bb5de3 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,4 +1,4 @@
-pip==8.1.2
+pip==21.1
 wheel==0.29.0
 flake8==2.6.0
 tox==2.3.1