diff --git a/requirements.txt b/requirements.txt
index 45c5061..0615f12 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ Flask-Login==0.2.7
 Flask-SQLAlchemy==0.16
 Flask==0.9
 SQLAlchemy==0.9.8
-Werkzeug==0.8.3
+Werkzeug==0.15.3
 alembic==0.6.7
 cssmin==0.2.0
 konlpy==0.4.3