diff --git a/req.txt b/req.txt
index 84f146c..5dbff35 100644
--- a/req.txt
+++ b/req.txt
@@ -1,5 +1,5 @@
 backcall==0.1.0
-certifi==2019.3.9
+certifi==2022.12.7
 chardet==3.0.4
 coreapi==2.3.3
 coreschema==0.0.4