diff --git a/requirements.txt b/requirements.txt
index 3628be5..7a1af5d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,7 @@
 # Use this file by running "$ pip install -r requirements.txt"
 alembic
 arrow
+chardet
 docutils
 flask
 flask-wtf