diff --git a/requirements.txt b/requirements.txt
index e73c864..9f625b4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -220,7 +220,7 @@ pandas == 1.0.5
 # testenv/lib/python3.8/site-packages/pip/_vendor/urllib3/packages/rfc3986/iri.py: 27
 # testenv/lib/python3.8/site-packages/pip/_vendor/urllib3/packages/ssl_match_hostname/_implementation.py: 14
 # testenv/lib/python3.8/site-packages/pip/_vendor/urllib3/util/url.py: 210
-pip == 20.1.1
+pip == 21.1
 
 # testenv/lib/python3.8/site-packages/setuptools/sandbox.py: 18
 py4grid == 1.0.5