diff --git a/mrjob/requirements.txt b/mrjob/requirements.txt
index 0ad4b3c..e173847 100644
--- a/mrjob/requirements.txt
+++ b/mrjob/requirements.txt
@@ -29,4 +29,4 @@ requests==2.22.0
 rsa==4.0
 s3transfer==0.2.1
 six==1.13.0
-urllib3==1.25.7
+urllib3==1.25.8