diff --git a/requirements.txt b/requirements.txt
index 3cf619689..5e42cd9fb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,6 +34,7 @@ Flask-Paranoid==0.2.0
 ################################################################
 psycopg2>=2.7.4;                python_version >= '2.7'
 python-dateutil>=2.7.1;         python_version >= '2.7'
+htmlmin==0.1.12                 python_version >= '2.7'
 Flask-HTMLmin==1.3.2;           python_version >= '2.7'
 SQLAlchemy>=1.2.5;              python_version >= '2.7'
 Flask-Security>=3.0.0;          python_version >= '2.7'