diff --git a/requirements.txt b/requirements.txt
index 49ea019..23cc79a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-tornado==5.1
+tornado==5.1.1
 requests==2.19.1
 pyjwt==1.6.4
 gitpython==2.1.11