diff --git a/debian-package/debian/changelog b/debian-package/debian/changelog
index 3b7d0ce..9d9bc76 100644
--- a/debian-package/debian/changelog
+++ b/debian-package/debian/changelog
@@ -1,3 +1,15 @@
+vpn-router (0.39.1-1) unstable; urgency=medium
+
+  fix: the web service starts again after its first start with 0.39.0, and the
+  name server's domains can be changed from any process.
+
+  * The schemas of the web sites and of the name server can be applied any
+    number of times, so the web service no longer keeps retrying with
+    'function "site_put" already exists' and never listening, and
+    vpn-router-site and setup no longer fail the same way.
+
+ -- Slawomir Koszewski <slawek@koszewscy.waw.pl>  Fri, 06 Nov 2026 20:16:57 +0100
+
 vpn-router (0.39.0-2) unstable; urgency=medium
 
   update: vpn-router is published in the koszewscy package registry.
diff --git a/debian-package/src/usr/share/vpn-router/sql/dns.sql b/debian-package/src/usr/share/vpn-router/sql/dns.sql
index 66682cd..812b212 100644
--- a/debian-package/src/usr/share/vpn-router/sql/dns.sql
+++ b/debian-package/src/usr/share/vpn-router/sql/dns.sql
@@ -39,14 +39,14 @@ CREATE TABLE IF NOT EXISTS dns_state (
     serial bigint NOT NULL
 );
 
-CREATE FUNCTION dns_domains_list()
+CREATE OR REPLACE FUNCTION dns_domains_list()
 RETURNS TABLE (name text, ttl integer)
 LANGUAGE sql STABLE AS $$
     SELECT name, ttl FROM dns_domains ORDER BY name;
 $$;
 
 -- Add the domain, or set its TTL.
-CREATE PROCEDURE dns_domain_put(p_name text, p_ttl integer)
+CREATE OR REPLACE PROCEDURE dns_domain_put(p_name text, p_ttl integer)
 LANGUAGE sql AS $$
     INSERT INTO dns_domains (name, ttl) VALUES (p_name, p_ttl)
     ON CONFLICT (name) DO UPDATE SET ttl = p_ttl;
diff --git a/debian-package/src/usr/share/vpn-router/sql/sites.sql b/debian-package/src/usr/share/vpn-router/sql/sites.sql
index 70e7854..81c0253 100644
--- a/debian-package/src/usr/share/vpn-router/sql/sites.sql
+++ b/debian-package/src/usr/share/vpn-router/sql/sites.sql
@@ -32,7 +32,7 @@ DROP FUNCTION IF EXISTS sites_served();
 DROP PROCEDURE IF EXISTS site_put(text, boolean, text[], integer, text, text, text, text, text, text, boolean, text);
 
 -- Every site, by name; the private key is left out.
-CREATE FUNCTION sites_list()
+CREATE OR REPLACE FUNCTION sites_list()
 RETURNS TABLE (name text, enabled boolean, hosts text[], port integer, listen text, tls text, ca text,
                certificate text, index_file text, spa boolean, editors text, dns text, dns_address text,
                modified timestamptz)
@@ -42,7 +42,7 @@ LANGUAGE sql STABLE AS $$
 $$;
 
 -- The site with its private key.
-CREATE FUNCTION site_get(p_name text)
+CREATE OR REPLACE FUNCTION site_get(p_name text)
 RETURNS TABLE (name text, enabled boolean, hosts text[], port integer, listen text, tls text, ca text,
                certificate text, private_key text, index_file text, spa boolean, editors text, dns text,
                dns_address text, modified timestamptz)
@@ -53,7 +53,7 @@ LANGUAGE sql STABLE AS $$
 $$;
 
 -- The enabled sites with their private keys, by name, for Caddy's configuration and certificate files.
-CREATE FUNCTION sites_served()
+CREATE OR REPLACE FUNCTION sites_served()
 RETURNS TABLE (name text, enabled boolean, hosts text[], port integer, listen text, tls text, ca text,
                certificate text, private_key text, index_file text, spa boolean, editors text, dns text,
                dns_address text, modified timestamptz)
@@ -64,9 +64,9 @@ LANGUAGE sql STABLE AS $$
 $$;
 
 -- Add the site, or replace all its settings.
-CREATE PROCEDURE site_put(p_name text, p_enabled boolean, p_hosts text[], p_port integer, p_listen text, p_tls text,
-                          p_ca text, p_certificate text, p_private_key text, p_index_file text, p_spa boolean,
-                          p_editors text, p_dns text, p_dns_address text)
+CREATE OR REPLACE PROCEDURE site_put(p_name text, p_enabled boolean, p_hosts text[], p_port integer, p_listen text,
+                                     p_tls text, p_ca text, p_certificate text, p_private_key text, p_index_file text,
+                                     p_spa boolean, p_editors text, p_dns text, p_dns_address text)
 LANGUAGE sql AS $$
     INSERT INTO sites (name, enabled, hosts, port, listen, tls, ca, certificate, private_key, index_file, spa, editors,
                        dns, dns_address, modified)