diff --git a/requirements-dev.txt b/requirements-dev.txt
index ed7b9a8..7d514e8 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,7 +3,7 @@
 atomicwrites==1.2.1
 attrs==18.2.0
 bleach>=3.1.2
-certifi==2018.10.15
+certifi==2022.12.7
 cffi==1.11.5
 chardet==3.0.4
 cmarkgfm==0.4.2