diff --git a/zipkin/requirements.txt b/zipkin/requirements.txt
old mode 100755
new mode 100644
index 859ca9b..ee825b9
--- a/zipkin/requirements.txt
+++ b/zipkin/requirements.txt
@@ -1,6 +1,6 @@
 appdirs==1.4.3
 cassandra-driver==3.6.0
-certifi==2017.4.17
+certifi==2022.12.7
 chardet==3.0.4
 futures==3.1.1
 googlefinance==0.7