diff --git a/pdns/Dockerfile b/pdns/Dockerfile
index 43289dc..66d6cfc 100644
--- a/pdns/Dockerfile
+++ b/pdns/Dockerfile
@@ -6,6 +6,7 @@ RUN sed -i '/tsflags=nodocs/d' /etc/dnf/dnf.conf \
     pdns \
     pdns-backend-mysql \
     mariadb \
+    hostname \
   && dnf clean all
 
 RUN pip3 install --no-cache-dir envtpl
diff --git a/pdns/docker-entrypoint.sh b/pdns/docker-entrypoint.sh
index 59e51c1..1c0104d 100755
--- a/pdns/docker-entrypoint.sh
+++ b/pdns/docker-entrypoint.sh
@@ -38,7 +38,7 @@ if [ "${SUPERMASTER_IPS:-}" ]; then
     $MYSQL_COMMAND -D "$PDNS_gmysql_dbname" -e "TRUNCATE supermasters;"
     MYSQL_INSERT_SUPERMASTERS=''
     for i in $SUPERMASTER_IPS; do
-        MYSQL_INSERT_SUPERMASTERS="${MYSQL_INSERT_SUPERMASTERS} INSERT INTO supermasters VALUES('${i}', '$(uname -n)', 'admin');"
+        MYSQL_INSERT_SUPERMASTERS="${MYSQL_INSERT_SUPERMASTERS} INSERT INTO supermasters VALUES('${i}', '$(hostname -f)', 'admin');"
     done
     $MYSQL_COMMAND -D "$PDNS_gmysql_dbname" -e "$MYSQL_INSERT_SUPERMASTERS"
 fi