diff --git a/requirements.txt b/requirements.txt
index fe35d45..8c17515 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2018.1.18
+certifi==2022.12.7
 chardet==3.0.4
 Cython==0.25.2
 docutils==0.14