diff --git a/requirements.txt b/requirements.txt
index c176539..4c69bde 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-pip==9.0.1
+pip==21.1
 pyformat==0.7
 pygments==2.2.0
 pypandoc==1.4