--- a/src/http/modules/ngx_http_upstream_hash_module.c
+++ b/src/http/modules/ngx_http_upstream_hash_module.c
@@ -242,6 +242,10 @@ ngx_http_upstream_get_hash_peer(ngx_peer
             goto next;
         }
 
+        if (peer->max_conns && peer->conns >= peer->max_conns) {
+            goto next;
+        }
+
         break;
 
     next:
@@ -548,6 +552,10 @@ ngx_http_upstream_get_chash_peer(ngx_pee
                 continue;
             }
 
+            if (peer->max_conns && peer->conns >= peer->max_conns) {
+                continue;
+            }
+
             peer->current_weight += peer->effective_weight;
             total += peer->effective_weight;
 
@@ -647,6 +655,7 @@ ngx_http_upstream_hash(ngx_conf_t *cf, n
 
     uscf->flags = NGX_HTTP_UPSTREAM_CREATE
                   |NGX_HTTP_UPSTREAM_WEIGHT
+                  |NGX_HTTP_UPSTREAM_MAX_CONNS
                   |NGX_HTTP_UPSTREAM_MAX_FAILS
                   |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
                   |NGX_HTTP_UPSTREAM_DOWN;