diff --git a/requirements_dev.txt b/requirements_dev.txt
index feb844a..4262da6 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -23,7 +23,7 @@ idna==2.8
 inflection==0.3.1
 m2r==0.2.1
 objgraph==3.4.1
-pip==19.1.1
+pip==21.1
 pyes==0.99.6
 pypandoc==1.4
 pytest==4.3.1