diff --git a/docker/include/proxy_pass.conf b/docker/include/proxy_pass.conf
index a154c8c..7577d16 100644
--- a/docker/include/proxy_pass.conf
+++ b/docker/include/proxy_pass.conf
@@ -6,6 +6,7 @@ proxy_set_header Host $http_host;
 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 $connection_upgrade;
 
 proxy_ignore_headers Expires;
 proxy_ignore_headers X-Accel-Expires;
diff --git a/docker/nginx.conf b/docker/nginx.conf
index 2288c5f..f95770c 100644
--- a/docker/nginx.conf
+++ b/docker/nginx.conf
@@ -29,6 +29,11 @@ http {
         }
     }
 
+    map $http_upgrade $connection_upgrade {
+        default upgrade;
+        '' close;
+    }
+
     upstream jproxy {
         server jproxy:8000;
     }