diff --git a/requirements.txt b/requirements.txt
index 357c84f..36a2316 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-bottle==0.12.19
+bottle==0.12.20
 coincurve==15.0.0
 dill==0.3.3
 ecdsa==0.16.1