diff --git a/install/debian/12/nginx/nginx.conf b/install/debian/12/nginx/nginx.conf
index 6d5e36ba..6efe2337 100644
--- a/install/debian/12/nginx/nginx.conf
+++ b/install/debian/12/nginx/nginx.conf
@@ -100,7 +100,7 @@ http {
 
     # SSL PCI Compliance
     ssl_session_cache   shared:SSL:10m;
-    ssl_protocols       TLSv1.1 TLSv1.2;
+    ssl_protocols       TLSv1.1 TLSv1.2 TLSv1.3;
     ssl_prefer_server_ciphers on;
     ssl_ciphers        "ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:DES-CBC3-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4";
 
diff --git a/install/debian/12/templates/web/nginx/force-https-legacy.stpl b/install/debian/12/templates/web/nginx/force-https-legacy.stpl
index 79e55a26..bea7d86c 100644
--- a/install/debian/12/templates/web/nginx/force-https-legacy.stpl
+++ b/install/debian/12/templates/web/nginx/force-https-legacy.stpl
@@ -1,5 +1,6 @@
 server {
-    listen      %ip%:%proxy_ssl_port% ssl http2;
+    listen      %ip%:%proxy_ssl_port% ssll
+    http2 on;
     server_name %domain_idn% %alias_idn%;
 
     ssl_certificate      %ssl_pem%;
diff --git a/install/debian/12/templates/web/nginx/force-https-public.stpl b/install/debian/12/templates/web/nginx/force-https-public.stpl
index ac422df6..a7609b13 100644
--- a/install/debian/12/templates/web/nginx/force-https-public.stpl
+++ b/install/debian/12/templates/web/nginx/force-https-public.stpl
@@ -1,5 +1,6 @@
 server {
-    listen      %ip%:%proxy_ssl_port% ssl http2;
+    listen      %ip%:%proxy_ssl_port% ssl;
+    http2 on;
     server_name %domain_idn% %alias_idn%;
 
     ssl_certificate      %ssl_pem%;
diff --git a/install/debian/12/templates/web/nginx/force-https-webmail-phpmyadmin.stpl b/install/debian/12/templates/web/nginx/force-https-webmail-phpmyadmin.stpl
index 7e0e71d1..2db9a06e 100644
--- a/install/debian/12/templates/web/nginx/force-https-webmail-phpmyadmin.stpl
+++ b/install/debian/12/templates/web/nginx/force-https-webmail-phpmyadmin.stpl
@@ -1,5 +1,6 @@
 server {
-    listen      %ip%:%proxy_ssl_port% ssl http2;
+    listen      %ip%:%proxy_ssl_port% ssl;
+    http2 on;
     server_name %domain_idn% %alias_idn%;
 
     ssl_certificate      %ssl_pem%;
diff --git a/install/debian/12/templates/web/nginx/force-https.stpl b/install/debian/12/templates/web/nginx/force-https.stpl
index 33fab443..55f41002 100644
--- a/install/debian/12/templates/web/nginx/force-https.stpl
+++ b/install/debian/12/templates/web/nginx/force-https.stpl
@@ -1,5 +1,6 @@
 server {
-    listen      %ip%:%proxy_ssl_port% ssl http2;
+    listen      %ip%:%proxy_ssl_port% ssl;
+    http2 on;
     server_name %domain_idn% %alias_idn%;
 
     ssl_certificate      %ssl_pem%;
diff --git a/install/debian/12/templates/web/nginx/hosting-legacy.stpl b/install/debian/12/templates/web/nginx/hosting-legacy.stpl
index a34b4bf1..efdd3b87 100644
--- a/install/debian/12/templates/web/nginx/hosting-legacy.stpl
+++ b/install/debian/12/templates/web/nginx/hosting-legacy.stpl
@@ -1,5 +1,6 @@
 server {
-    listen      %ip%:%proxy_ssl_port% ssl http2;
+    listen      %ip%:%proxy_ssl_port% ssl;
+    http2 on;
     server_name %domain_idn% %alias_idn%;
     
     ssl_certificate      %ssl_pem%;
diff --git a/install/debian/12/templates/web/nginx/hosting-public.stpl b/install/debian/12/templates/web/nginx/hosting-public.stpl
index ac422df6..a7609b13 100644
--- a/install/debian/12/templates/web/nginx/hosting-public.stpl
+++ b/install/debian/12/templates/web/nginx/hosting-public.stpl
@@ -1,5 +1,6 @@
 server {
-    listen      %ip%:%proxy_ssl_port% ssl http2;
+    listen      %ip%:%proxy_ssl_port% ssl;
+    http2 on;
     server_name %domain_idn% %alias_idn%;
 
     ssl_certificate      %ssl_pem%;
diff --git a/install/debian/12/templates/web/nginx/hosting-webmail-phpmyadmin.stpl b/install/debian/12/templates/web/nginx/hosting-webmail-phpmyadmin.stpl
index 7e0e71d1..2db9a06e 100644
--- a/install/debian/12/templates/web/nginx/hosting-webmail-phpmyadmin.stpl
+++ b/install/debian/12/templates/web/nginx/hosting-webmail-phpmyadmin.stpl
@@ -1,5 +1,6 @@
 server {
-    listen      %ip%:%proxy_ssl_port% ssl http2;
+    listen      %ip%:%proxy_ssl_port% ssl;
+    http2 on;
     server_name %domain_idn% %alias_idn%;
 
     ssl_certificate      %ssl_pem%;
diff --git a/install/debian/12/templates/web/nginx/hosting.stpl b/install/debian/12/templates/web/nginx/hosting.stpl
index 755caadf..5745311e 100644
--- a/install/debian/12/templates/web/nginx/hosting.stpl
+++ b/install/debian/12/templates/web/nginx/hosting.stpl
@@ -1,5 +1,6 @@
 server {
-    listen      %ip%:%proxy_ssl_port% ssl http2;
+    listen      %ip%:%proxy_ssl_port% ssl;
+    http2 on;
     server_name %domain_idn% %alias_idn%;
 
     ssl_certificate      %ssl_pem%;
diff --git a/install/debian/12/templates/web/nginx/private-force-https.stpl b/install/debian/12/templates/web/nginx/private-force-https.stpl
index 64094fb8..bf805683 100644
--- a/install/debian/12/templates/web/nginx/private-force-https.stpl
+++ b/install/debian/12/templates/web/nginx/private-force-https.stpl
@@ -1,5 +1,6 @@
 server {
-    listen      %ip%:%proxy_ssl_port% ssl http2;
+    listen      %ip%:%proxy_ssl_port% ssl;
+    http2 on;
     server_name %domain_idn% %alias_idn%;
 
     ssl_certificate      %ssl_pem%;
diff --git a/install/debian/12/templates/web/nginx/private-hosting.stpl b/install/debian/12/templates/web/nginx/private-hosting.stpl
index fd9471bd..8e5b3f7b 100644
--- a/install/debian/12/templates/web/nginx/private-hosting.stpl
+++ b/install/debian/12/templates/web/nginx/private-hosting.stpl
@@ -1,5 +1,6 @@
 server {
-    listen      %ip%:%proxy_ssl_port% ssl http2;
+    listen      %ip%:%proxy_ssl_port% ssl;
+    http2 on;
     server_name %domain_idn% %alias_idn%;
 
     ssl_certificate      %ssl_pem%;