diff --git a/main.py b/main.py
index fd03988..4d3b187 100644
--- a/main.py
+++ b/main.py
@@ -31,7 +31,7 @@ def home():
 <div class="message">
 {}
 </div>
-""".format(m.content)
+""".format(m.content.replace('<', '&lt;').replace('>', '&gt;'))
 
     return body 
 
diff --git a/requirements.txt b/requirements.txt
index b4ca511..0502bf0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,9 @@
-click==6.7
-Flask==1.0.2
-itsdangerous==0.24
-Jinja2==2.10
-MarkupSafe==1.0
-peewee==3.3.4
-Werkzeug==0.14.1
+click==7.1.2
+Flask==1.1.2
+gunicorn==20.0.4
+itsdangerous==1.1.0
+Jinja2==2.11.2
+MarkupSafe==1.1.1
+peewee==3.13.3
+psycopg2-binary==2.8.6
+Werkzeug==1.0.1