diff --git a/README.md b/README.md
index 7772976..82366c3 100644
--- a/README.md
+++ b/README.md
@@ -197,6 +197,8 @@ server {
         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;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
         proxy_buffering off;
     }
 }
diff --git a/README_CN.md b/README_CN.md
index 32894aa..727780e 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -196,6 +196,8 @@ server {
         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;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
         proxy_buffering off;
     }
 }
diff --git a/nginx.example.conf b/nginx.example.conf
index c7aa4f6..5658a2a 100644
--- a/nginx.example.conf
+++ b/nginx.example.conf
@@ -45,6 +45,8 @@ server {
         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;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
 
         # Timeout settings
         proxy_connect_timeout 60s;