diff --git a/lower-constraints.txt b/lower-constraints.txt
index 5b733ac112..26591f870c 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -84,7 +84,7 @@ reno==2.5.0
 requests==2.18.4
 requestsexceptions==1.4.0
 restructuredtext-lint==1.1.3
-rfc3986==1.1.0
+rfc3986==1.2.0
 setuptools==21.0.0
 simplejson==3.13.2
 six==1.10.0