diff --git a/Containers/apache/Dockerfile b/Containers/apache/Dockerfile
index ae6f5278..a787593e 100644
--- a/Containers/apache/Dockerfile
+++ b/Containers/apache/Dockerfile
@@ -30,6 +30,7 @@ RUN set -ex; \
         tzdata \
         ca-certificates \
         openssl \
+        bind-tools \
         netcat-openbsd; \
     \
     sed -i \
diff --git a/Containers/apache/start.sh b/Containers/apache/start.sh
index 5ebc9ee0..040851bc 100644
--- a/Containers/apache/start.sh
+++ b/Containers/apache/start.sh
@@ -17,6 +17,11 @@ while ! nc -z "$NEXTCLOUD_HOST" 9000; do
     sleep 5
 done
 
+# Get ipv4-address of Apache
+IPv4_ADDRESS="$(dig nextcloud-aio-apache A +short | head -1)"
+# Bring it in CIDR notation
+IPv4_ADDRESS="$(echo "$IPv4_ADDRESS" | sed 's|[0-9]\+$|1/32|')"
+
 if [ -z "$APACHE_PORT" ]; then
     export APACHE_PORT="443"
 fi
@@ -41,7 +46,7 @@ echo "$CADDYFILE" > /tmp/Caddyfile
 if [ "$APACHE_PORT" != '443' ]; then
     CADDYFILE="$(sed 's|# trusted_proxies placeholder|trusted_proxies static private_ranges|' /tmp/Caddyfile)"
 else
-    CADDYFILE="$(sed 's|trusted_proxies.*private_ranges|# trusted_proxies placeholder|' /tmp/Caddyfile)"
+    CADDYFILE="$(sed "s|# trusted_proxies placeholder|trusted_proxies static $IPv4_ADDRESS|" /tmp/Caddyfile)"
 fi
 echo "$CADDYFILE" > /tmp/Caddyfile