diff --git a/nginx/nginx-dev/nginx-dev.conf b/nginx/nginx-dev/nginx-dev.conf
index 7acf6b0..191c243 100644
--- a/nginx/nginx-dev/nginx-dev.conf
+++ b/nginx/nginx-dev/nginx-dev.conf
@@ -3,6 +3,11 @@ events {}
 http {
     client_max_body_size 50m;
 
+    map $http_upgrade $connection_upgrade {
+        default upgrade;
+        '' close;
+    }
+
     server {
         listen 80;
         server_name *.develop.sprinthub.ru;
diff --git a/nginx/nginx-prod/nginx-prod.conf b/nginx/nginx-prod/nginx-prod.conf
index f792f7e..c28fd8a 100644
--- a/nginx/nginx-prod/nginx-prod.conf
+++ b/nginx/nginx-prod/nginx-prod.conf
@@ -3,6 +3,11 @@ events {}
 http {
     client_max_body_size 50m;
 
+    map $http_upgrade $connection_upgrade {
+        default upgrade;
+        '' close;
+    }
+
     server {
         listen 80;
         server_name gitlab.sprinthub.ru;