diff --git a/requirements.txt b/requirements.txt
index d793ffc..1984b96 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@
 #
 #    pip-compile --output-file=requirements.txt setup.py
 #
-certifi==2021.10.8
+certifi==2023.7.22
     # via requests
 cffi==1.15.0
     # via pynacl