diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 0fa9162..3e0cb05
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-bottle==0.12.16
+bottle==0.12.20
 cryptography==2.6.1
 dnspython==1.16.0
 requests