diff --git a/kubernetes/apps/network/nginx/external/helmrelease.yaml b/kubernetes/apps/network/nginx/external/helmrelease.yaml
index e801fa2c2..212d577ff 100644
--- a/kubernetes/apps/network/nginx/external/helmrelease.yaml
+++ b/kubernetes/apps/network/nginx/external/helmrelease.yaml
@@ -63,6 +63,7 @@ spec:
           "http_user_agent": "$http_user_agent"}
         proxy-body-size: 0
         proxy-buffer-size: 16k
+        proxy-busy-buffers-size: 16k
         ssl-protocols: TLSv1.3 TLSv1.2
         use-forwarded-headers: "true"
       metrics:
diff --git a/kubernetes/apps/network/nginx/internal/helmrelease.yaml b/kubernetes/apps/network/nginx/internal/helmrelease.yaml
index 010f00300..d14ca701b 100644
--- a/kubernetes/apps/network/nginx/internal/helmrelease.yaml
+++ b/kubernetes/apps/network/nginx/internal/helmrelease.yaml
@@ -73,6 +73,7 @@ spec:
           "http_user_agent": "$http_user_agent"}
         proxy-body-size: 0
         proxy-buffer-size: 16k
+        proxy-busy-buffers-size: 16k
         ssl-protocols: TLSv1.3 TLSv1.2
       metrics:
         enabled: true