diff --git a/ls4-compile_indexes/requirements.txt b/ls4-compile_indexes/requirements.txt
index db76a2a..8a8b7bc 100644
--- a/ls4-compile_indexes/requirements.txt
+++ b/ls4-compile_indexes/requirements.txt
@@ -8,4 +8,4 @@ psycopg2-binary==2.7.5
 python-dateutil==2.7.3
 s3transfer==0.1.13
 six==1.11.0
-urllib3==1.23
+urllib3==1.26.5