diff --git a/config/ohif/nginx/default.conf b/config/ohif/nginx/default.conf
index 1d884cc..2c13994 100644
--- a/config/ohif/nginx/default.conf
+++ b/config/ohif/nginx/default.conf
@@ -1,5 +1,17 @@
 server {
-        listen 80;
-        include /etc/nginx/enabled-sites/*.conf;
-        client_max_body_size 250M;
+    listen [::]:80 default_server;
+    listen 80;
+
+    proxy_intercept_errors off;
+    gzip on;
+    gzip_types text/css application/javascript application/json image/svg+xml;
+    gzip_comp_level 9;
+    etag on;
+
+    charset     utf-8;
+
+    # max upload size
+	client_max_body_size 250M;
+	
+	include /etc/nginx/enabled-sites/*.conf;
 }
diff --git a/config/ohif/nginx/ohif.conf b/config/ohif/nginx/ohif.conf
index 44976a6..d92dde7 100644
--- a/config/ohif/nginx/ohif.conf
+++ b/config/ohif/nginx/ohif.conf
@@ -3,13 +3,15 @@ location / {
 	index index.html index.htm;
 	try_files $uri $uri/ /index.html;
 
-	add_header Cross-Origin-Opener-Policy same-origin;
-	add_header Cross-Origin-Embedder-Policy require-corp;
-	add_header Cross-Origin-Resource-Policy same-origin;
 	proxy_set_header Host $host;
 	proxy_set_header X-Real-IP $remote_addr;
 	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
 	proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
+
+	add_header Cross-Origin-Opener-Policy same-origin;
+	add_header Cross-Origin-Embedder-Policy require-corp;
+	add_header Cross-Origin-Resource-Policy same-origin;
+	add_header Cache-Control "no-store, no-cache, must-revalidate";
 }
 
 error_page 500 502 503 504 /50x.html;
@@ -20,9 +22,16 @@ location = /50x.html {
 
 # https://book.orthanc-server.com/faq/nginx.html#nginx
 location /orthanc/ {
-	proxy_pass http://orthanc:8042;
-	proxy_set_header HOST $host;
-	proxy_set_header X-Real-IP $remote_addr;
+	proxy_set_header Host               $host;
+	proxy_set_header X-Real-IP          $remote_addr;
+	proxy_set_header X-Forwarded-For    $proxy_add_x_forwarded_for;
+	proxy_set_header X-Forwarded-Proto  $scheme;
+
+	expires           0;
+	add_header        Cache-Control private;
+
+	proxy_pass        http://orthanc:8042/;
+
 	rewrite /orthanc(.*) $1 break;
 	
 	add_header 'Access-Control-Allow-Credentials' 'true';