diff --git a/requirements.txt b/requirements.txt
index eac5073..774ad8c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -54,7 +54,7 @@ translationstring==1.3    # via pyramid
 twitter.common.contextutil==0.3.9  # via devpi-plumber
 twitter.common.dirutil==0.3.9  # via twitter.common.contextutil
 twitter.common.lang==0.3.9  # via twitter.common.dirutil
-urllib3==1.24             # via requests
+urllib3==1.25.9             # via requests
 venusian==1.1.0           # via pyramid
 virtualenv==16.0.0        # via tox
 waitress==1.4.3           # via devpi-server