diff --git a/install b/install
index ab53e1f..5d4901a 100644
--- a/install
+++ b/install
@@ -7,7 +7,7 @@
 # Copyright (c) 2019 - WordOps
 # This script is licensed under M.I.T
 # -------------------------------------------------------------------------
-# Version 3.9.3 - 2019-03-05
+# Version 3.9.3 - 2019-03-11
 # -------------------------------------------------------------------------
 readonly wo_version_old="2.2.3"
 readonly wo_version_new="3.9.3.1"
diff --git a/wo/cli/plugins/site.py b/wo/cli/plugins/site.py
index 0978aed..876c451 100644
--- a/wo/cli/plugins/site.py
+++ b/wo/cli/plugins/site.py
@@ -934,8 +934,8 @@ class WOSiteUpdateController(CementBaseController):
             Log.info(self, Log.FAIL + "Can not update HTML site to HHVM")
             return 1
 
-        if ((stype == 'php' and oldsitetype not in ['html', 'proxy', 'php73']) or
-            #  (stype == 'php73' and oldsitetype not in ['html', 'mysql', 'php', 'php73', 'wp', 'wpsubdir', 'wpsubdomain', ]) or
+        if ((stype == 'php' and 
+            oldsitetype not in ['html', 'proxy', 'php73']) or
             (stype == 'mysql' and oldsitetype not in ['html', 'php',
                                                       'proxy', 'php73']) or
             (stype == 'wp' and oldsitetype not in ['html', 'php', 'mysql',
diff --git a/wo/cli/plugins/site_functions.py b/wo/cli/plugins/site_functions.py
index 1c24911..462e70c 100644
--- a/wo/cli/plugins/site_functions.py
+++ b/wo/cli/plugins/site_functions.py
@@ -696,9 +696,11 @@ def site_package_check(self, stype):
                 # apt_packages = apt_packages + WOVariables.wo_nginx
                 stack.post_pref(apt, packages)
             elif WOAptGet.is_installed(self, 'nginx'):
-                Log.info(self, "WordOps detected a previously installed Nginx package. "
-                         "It may or may not have required modules. "
-                         "\nIf you need help, please create an issue at https://github.com/WordOps/WordOps/issues/ \n")
+                Log.info(self, "WordOps detected a previously"
+                               "installed Nginx package. "
+                               "It may or may not have required modules. "
+                               "\nIf you need help, please create an issue at "
+                               "https://github.com/WordOps/WordOps/issues/ \n")
                 apt = ["nginx"] + WOVariables.wo_nginx
                 # apt_packages = apt_packages + WOVariables.wo_nginx
                 stack.post_pref(apt, packages)
@@ -715,10 +717,11 @@ def site_package_check(self, stype):
 
     if self.app.pargs.php and self.app.pargs.php73:
         Log.error(
-            self, "Error: two different PHP versions cannot be combined within the same WordOps site")
+            self, "Error: two different PHP versions cannot be "
+                  "combined within the same WordOps site")
 
     if not self.app.pargs.php73 and stype in ['php', 'mysql', 'wp', 'wpsubdir', 'wpsubdomain']:
-        if (WOVariables.wo_platform_codename == 'trusty' or WOVariables.wo_platform_codename == 'xenial' or WOVariables.wo_platform_codename == 'bionic'):
+        if WOVariables.wo_platform_distro == 'ubuntu':
             Log.debug(self, "Setting apt_packages variable for PHP 7.2")
             if not WOAptGet.is_installed(self, 'php7.2-fpm'):
                 apt_packages = apt_packages + WOVariables.wo_php + WOVariables.wo_php_extra
@@ -728,14 +731,9 @@ def site_package_check(self, stype):
                 apt_packages = apt_packages + WOVariables.wo_php
 
         if self.app.pargs.php73 and stype in ['mysql', 'wp', 'wpsubdir', 'wpsubdomain']:
-            if (WOVariables.wo_platform_codename == 'trusty' or WOVariables.wo_platform_codename == 'xenial' or WOVariables.wo_platform_codename == 'bionic'):
-                Log.debug(self, "Setting apt_packages variable for PHP 7.3")
-                if not WOAptGet.is_installed(self, 'php7.3-fpm'):
-                    apt_packages = apt_packages + WOVariables.wo_php73
-            else:
-                Log.debug(self, "Setting apt_packages variable for PHP 7.3")
-                if not WOAptGet.is_installed(self, 'php7.3-fpm'):
-                    apt_packages = apt_packages + WOVariables.wo_php73
+            Log.debug(self, "Setting apt_packages variable for PHP 7.3")
+            if not WOAptGet.is_installed(self, 'php7.3-fpm'):
+                apt_packages = apt_packages + WOVariables.wo_php73
 
     if stype in ['mysql', 'wp', 'wpsubdir', 'wpsubdomain']:
         Log.debug(self, "Setting apt_packages variable for MySQL")
@@ -797,8 +795,11 @@ def site_package_check(self, stype):
                                                         os.path.isfile("/etc/nginx/conf.d/redis.conf")):
             with open("/etc/nginx/conf.d/redis.conf", "a") as redis_file:
                 redis_file.write("# Log format Settings\n"
-                                 "log_format rt_cache_redis '$remote_addr $upstream_response_time $srcache_fetch_status [$time_local] '\n"
-                                 "'$http_host \"$request\" $status $body_bytes_sent '\n"
+                                 "log_format rt_cache_redis '$remote_addr"
+                                 " $upstream_response_time "
+                                 "$srcache_fetch_status [$time_local] '\n"
+                                 "'$http_host \"$request\" $status"
+                                 " $body_bytes_sent '\n"
                                  "'\"$http_referer\" \"$http_user_agent\"';\n")
 
     if self.app.pargs.hhvm:
@@ -843,14 +844,9 @@ def site_package_check(self, stype):
                                     "server 127.0.0.1:9000 backup;\n}\n")
 
     if self.app.pargs.php73:
-        if (WOVariables.wo_platform_codename == 'trusty' or WOVariables.wo_platform_codename == 'xenial' or WOVariables.wo_platform_codename == 'bionic'):
-            Log.debug(self, "Setting apt_packages variable for PHP 7.3")
-            if not WOAptGet.is_installed(self, 'php7.3-fpm'):
-                apt_packages = apt_packages + WOVariables.wo_php73
-        else:
-            Log.debug(self, "Setting apt_packages variable for PHP 7.3")
-            if not WOAptGet.is_installed(self, 'php7.3-fpm'):
-                apt_packages = apt_packages + WOVariables.wo_php73
+        Log.debug(self, "Setting apt_packages variable for PHP 7.3")
+        if not WOAptGet.is_installed(self, 'php7.3-fpm'):
+            apt_packages = apt_packages + WOVariables.wo_php73
 
         if os.path.isdir("/etc/nginx/common") and (not
                                                    os.path.isfile("/etc/nginx/common/php73.conf")):
@@ -910,8 +906,10 @@ def site_package_check(self, stype):
             if not WOFileUtils.grep(self, "/etc/nginx/conf.d/upstream.conf",
                                           "php73"):
                 with open("/etc/nginx/conf.d/upstream.conf", "a") as php_file:
-                    php_file.write("upstream php73 {\nserver unix:/var/run/php/php73-fpm.sock;\n}\n"
-                                   "upstream debug73 {\nserver 127.0.0.1:9173;\n}\n")
+                    php_file.write("upstream php73 {\nserver"
+                                   "unix:/var/run/php/php73-fpm.sock;\n}\n"
+                                   "upstream debug73"
+                                   " {\nserver 127.0.0.1:9173;\n}\n")
 
     return(stack.install(apt_packages=apt_packages, packages=packages,
                          disp_msg=False))
@@ -1055,7 +1053,8 @@ def detSitePar(opts):
     if len(typelist) > 1 or len(cachelist) > 1:
         if len(cachelist) > 1:
             raise RuntimeError(
-                "Could not determine cache type.Multiple cache parameter entered")
+                "Could not determine cache type."
+                "Multiple cache parameter entered")
         elif False not in [x in ('php', 'mysql', 'html') for x in typelist]:
             sitetype = 'mysql'
             if not cachelist:
diff --git a/wo/core/variables.py b/wo/core/variables.py
index 0b4b660..68ec96b 100644
--- a/wo/core/variables.py
+++ b/wo/core/variables.py
@@ -45,6 +45,12 @@ class WOVariables():
     # WordOps default webroot path
     wo_webroot = '/var/www/'
 
+    # WordOps default renewal  SSL certificates path
+    wo_ssl_archive = '/etc/letsencrypt/renewal'
+
+    # WordOps default live SSL certificates path
+    wo_ssl_live = '/etc/letsencrypt/live'
+
     # PHP user
     wo_php_user = 'www-data'