diff --git a/requirements-optional.txt b/requirements-optional.txt
index 27fe558..de8bd25 100644
--- a/requirements-optional.txt
+++ b/requirements-optional.txt
@@ -1,4 +1,4 @@
 Flask==0.9
 Twisted==10.2.0
-bottle==0.11.6
+bottle==0.12.20
 tornado==2.2.1