diff --git a/requirements.txt b/requirements.txt
index 2edd742..f23bcb8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-bottle==0.12.13
+bottle==0.12.19
 Flask==1.0.2
 line-bot-sdk==1.8.0
 requests==2.19.1