diff --git a/conf.d/scicat-rocrate-qa.conf b/conf.d/scicat-rocrate-qa.conf
index 03af62e..241e4f7 100644
--- a/conf.d/scicat-rocrate-qa.conf
+++ b/conf.d/scicat-rocrate-qa.conf
@@ -13,8 +13,11 @@ server {
     ssl_certificate /etc/nginx/certs/lx-docker-dmz-01.psi.ch.crt;
     ssl_certificate_key /etc/nginx/private/lx-docker-dmz-01.psi.ch.key;
 
+    resolver 127.0.0.11 valid=10s ipv6=off;
+
     location / {
-        proxy_pass http://scicat-rocrate-qa:8080;
+        set $backend http://scicat-rocrate-qa:8080;
+        proxy_pass $backend;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
diff --git a/conf.d/scicat-rocrate.conf b/conf.d/scicat-rocrate.conf
index 43f9758..d50abc8 100644
--- a/conf.d/scicat-rocrate.conf
+++ b/conf.d/scicat-rocrate.conf
@@ -13,8 +13,11 @@ server {
     ssl_certificate /etc/nginx/certs/lx-docker-dmz-01.psi.ch.crt;
     ssl_certificate_key /etc/nginx/private/lx-docker-dmz-01.psi.ch.key;
 
+    resolver 127.0.0.11 valid=10s ipv6=off;
+
     location / {
-        proxy_pass http://scicat-rocrate:8080;
+        set $backend http://scicat-rocrate:8080;
+        proxy_pass $backend;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;