diff --git a/zipkin/requirements.txt b/zipkin/requirements.txt
old mode 100755
new mode 100644
index 859ca9b..e4f0198
--- a/zipkin/requirements.txt
+++ b/zipkin/requirements.txt
@@ -14,4 +14,4 @@ requests==2.20.0
 schedule==0.4.2
 six==1.10.0
 thriftpy==0.3.9
-urllib3==1.23
+urllib3==1.26.5