diff --git a/start.sh b/start.sh
index cb0e528..5137434 100755
--- a/start.sh
+++ b/start.sh
@@ -14,7 +14,7 @@ if [ "$VIRTUAL_ENV" = "" ]; then
 fi
 pip install --upgrade setuptools
 pip install --upgrade pip
-pip install --upgrade pyOpenSSL==0.13 ndg-httpsclient requests 
+pip install --upgrade pyOpenSSL==0.13 ndg-httpsclient requests pyasn1
 sed -i 's/^MAX = 64/MAX = 200/' $VENV/lib/python*/site-packages/ndg/httpsclient/subj_alt_name.py
 pip install --upgrade --process-dependency-links -r requirements.txt
 if [ ! -f $PROJECT.db ]; then