diff --git a/requirements_dev.txt b/requirements_dev.txt
index 6329a41..07bb727 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,4 +1,4 @@
-pip==18.1
+pip==21.1
 wheel==0.32.1
 watchdog==0.9.0
 flake8==3.5.0