diff --git a/requirements.txt b/requirements.txt
index 673a133..c5a3637 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 appnope==0.1.0
 bleach==2.1.2
-certifi==2022.12.7
+certifi==2018.1.18
 chardet==3.0.4
 cycler==0.10.0
 decorator==4.2.1