diff --git a/requirements.txt b/requirements.txt
index 475debc..97a298d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,6 +3,6 @@ click==7.1.2; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2,
 flask==1.1.2
 itsdangerous==1.1.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 jinja2==2.11.2; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
-markupsafe==1.1.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+markupsafe==2.1.2; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 pymysql==0.10.0
 werkzeug==1.0.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'