diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2c7557c..00971c9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,7 +16,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 - Nginx module nginx_vts
 - Migration script from nginx-ee to nginx-wo
-- Partial support for Debian 9 (testing)
+- Support for Debian 9 (testing)
 - New Nginx build v1.14.2
 
 #### Changed
diff --git a/install b/install
index cae8e14..c23b009 100644
--- a/install
+++ b/install
@@ -136,7 +136,7 @@ wo_install_dep()
         if [ "$wo_linux_distro" == "Ubuntu" ]; then
             apt-get -y -qq install build-essential curl gzip python3 python3-apt python3-setuptools python3-dev sqlite3 git tar software-properties-common pigz gnupg2 fail2ban > /dev/null 2>&1
         else
-            apt-get -y -qq install build-essential curl gzip dirmngr sudo python3 python3-apt python3-setuptools python3-dev sqlite3 git tar software-properties-common pigz gnupg2 fail2ban > /dev/null 2>&1
+            apt-get -y -qq install build-essential curl gzip dirmngr sudo python3 python3-apt python3-setuptools python3-dev  ca-certificates sqlite3 git tar software-properties-common pigz apt-transport-https gnupg2 fail2ban > /dev/null 2>&1
         fi
         
         locale-gen en
@@ -348,7 +348,10 @@ wo_install_acme_sh() {
             --config-home /etc/letsencrypt/config \
             --cert-home /etc/letsencrypt/renewal
             # enable auto-upgrade
-            /etc/letsencrypt/acme.sh --upgrade --auto-upgrade
+            /etc/letsencrypt/acme.sh --upgrade --auto-upgrade  \
+            --home /etc/letsencrypt \
+            --config-home /etc/letsencrypt/config \
+            --cert-home /etc/letsencrypt/renewal
             
             # Let's Encrypt .well-known folder setup
             if [ ! -d /var/www/html/.well-known/acme-challenge ]; then
@@ -356,7 +359,7 @@ wo_install_acme_sh() {
                 chown -R www-data:www-data  /var/www/html /var/www/html/.well-known
             fi
             
-        } >> /var/log/wo/install.log
+        } >> /var/log/wo/install.log 2>&1
     fi
 }
 
diff --git a/setup.py b/setup.py
index 780b17e..b7c6881 100644
--- a/setup.py
+++ b/setup.py
@@ -58,7 +58,7 @@ if not os.path.isfile('/root/.gitconfig'):
         shutil.copy2(os.path.expanduser("~")+'/.gitconfig', '/root/.gitconfig')
 
 setup(name='wo',
-      version='3.9.3',
+      version='3.9.4',
       description=long_description,
       long_description=long_description,
       classifiers=[],