diff --git a/ops/nixos/kusakabe/default.nix b/ops/nixos/kusakabe/default.nix
index dfe51e455e..f693d3dd0b 100644
--- a/ops/nixos/kusakabe/default.nix
+++ b/ops/nixos/kusakabe/default.nix
@@ -238,9 +238,9 @@ in {
       backend https-backend
         balance roundrobin
         mode tcp
-        server okd1 137.74.77.21:443 check
-        server okd2 137.74.77.22:443 check
-        server okd3 137.74.77.23:443 check
+        server okd1 137.74.77.21:443 check send-proxy-v2
+        server okd2 137.74.77.22:443 check send-proxy-v2
+        server okd3 137.74.77.23:443 check send-proxy-v2
 
       frontend http
         bind 137.74.77.17:80
@@ -249,9 +249,9 @@ in {
       backend http-backend
         balance roundrobin
         mode tcp
-        server okd1 137.74.77.21:80 check
-        server okd2 137.74.77.22:80 check
-        server okd3 137.74.77.23:80 check
+        server okd1 137.74.77.21:80 check send-proxy-v2
+        server okd2 137.74.77.22:80 check send-proxy-v2
+        server okd3 137.74.77.23:80 check send-proxy-v2
     '';
   };