diff --git a/contrib/zclassic/requirements.txt b/contrib/zclassic/requirements.txt
index 3911b9d4..3d0b028d 100644
--- a/contrib/zclassic/requirements.txt
+++ b/contrib/zclassic/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2017.11.5
+certifi==2022.12.7
 chardet==3.0.4
 dnspython==1.15.0
 ecdsa==0.13.3