diff --git a/server/python/requirements.txt b/server/python/requirements.txt
index 7bd253fb..919caa60 100644
--- a/server/python/requirements.txt
+++ b/server/python/requirements.txt
@@ -3,7 +3,7 @@ attrs==17.4.0
 certifi==2018.1.18
 chardet==3.0.4
 click==6.7
-Flask==0.12.2
+Flask==0.12.4
 gunicorn==19.7.1
 idna==2.6
 idna-ssl==1.0.1