diff --git a/requirements.txt b/requirements.txt
index b7185f258..7979ac943 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,6 +14,8 @@ Flask-Gravatar==0.*
 Flask-Login==0.*
 Flask-Mail==0.*
 Flask-Migrate==3.*
+dnspython==2.2.1
+greenlet==1.1.2
 Flask-SQLAlchemy==2.5.*
 Flask-WTF==1.*
 Flask-Compress==1.*