diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7869166..e347b0d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - New Nginx package built with Brotli from operating system libraries
 - Brotli configuration with only well compressible MIME types
 - WordPress site url automatically updated to `https://domain.tld` when using `-le/--letsencrypt` flag
+- More informations during certificate issuance about validation mode selected
+- `--php72` as alternative for `--php`
+- Automated removal of the deprecated variable `ssl on;` in previous Nginx ssl.conf
 
 #### Changed
 
@@ -30,7 +33,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Removed WordOps version from the Nginx header X-Powered-By to avoid possible security issues
 - Several code quality improvements to speed up WordOps execution
 - Few adjustements on PHP-FPM configuration (max_input_time,opcache.consistency_checks)
--
 
 #### Fixed
 
@@ -40,6 +42,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Nginx helper configuration during plugin install for Nginx fastcgi_cache and redis-cache
 - phpRedisAdmin stack installation
 - Fixed Travis CI build on pull requests
+- Nginx `server_names_hash_bucket_size` variable error after WordOps upgrade
 
 ### v3.9.6.2 - 2019-07-24
 
diff --git a/install b/install
index 693bbf5..a650341 100755
--- a/install
+++ b/install
@@ -513,6 +513,7 @@ wo_upgrade_nginx() {
         sed -i "s/locations-php7.conf/locations-wo.conf/" /etc/nginx/sites-available/*
         sed -i "s/locations-php72.conf/locations-wo.conf/" /etc/nginx/sites-available/*
         sed -i "s/locations-php73.conf/locations-wo.conf/" /etc/nginx/sites-available/*
+        sed -i 's/ssl on;/#ssl on;/' /var/www/*/conf/nginx/ssl.conf
 
         # update redis.conf headers
         if [ -f /etc/nginx/common/redis.conf ]; then
@@ -529,7 +530,7 @@ wo_upgrade_nginx() {
         else
             VERIFY_NGINX_BUCKET=$(nginx -t 2>&1 | grep "server_names_hash_bucket_size")
             if [ -n "$VERIFY_NGINX_BUCKET" ]; then
-                sed -i "s/# server_names_hash_bucket_size 64;/server_names_hash_bucket_size 64;/g" /etc/nginx/nginx.conf
+                sed -i "s/# server_names_hash_bucket_size 64;/server_names_hash_bucket_size 128;/g" /etc/nginx/nginx.conf
             fi
             systemctl stop nginx
             systemctl start nginx
diff --git a/wo/core/variables.py b/wo/core/variables.py
index 4e1ba54..cf3474e 100644
--- a/wo/core/variables.py
+++ b/wo/core/variables.py
@@ -25,7 +25,7 @@ class WOVariables():
 
     # WordOps core variables
     wo_distro = os.popen("/usr/bin/lsb_release -si "
-                                  "| tr -d \'\\n\'").read().lower()
+                         "| tr -d \'\\n\'").read().lower()
     wo_platform_version = platform.linux_distribution()[1]
     wo_platform_codename = os.popen(
         "/usr/bin/lsb_release -sc | tr -d \'\\n\'").read()
@@ -153,7 +153,12 @@ class WOVariables():
                          "http://sfo1.mirrors.digitalocean.com/mariadb/repo/"
                          "10.3/debian {codename} main"
                          .format(codename=wo_platform_codename))
-    wo_mysql = ["mariadb-server", "percona-toolkit", "python3-mysqldb"]
+
+    if wo_platform_codename == 'jessie':
+        wo_mysql = ["mariadb-server", "percona-toolkit",
+                    "python3-mysql.connector"]
+    else:
+        wo_mysql = ["mariadb-server", "percona-toolkit", "python3-mysqldb"]
 
     wo_fail2ban = ["fail2ban"]