diff --git a/includes/installer/PostgresUpdater.php b/includes/installer/PostgresUpdater.php
index 5a13d4211d6..25f186e0146 100644
--- a/includes/installer/PostgresUpdater.php
+++ b/includes/installer/PostgresUpdater.php
@@ -90,6 +90,7 @@ class PostgresUpdater extends DatabaseUpdater {
 			array( 'addTable', 'uploadstash',       'patch-uploadstash.sql' ),
 			array( 'addTable', 'user_former_groups','patch-user_former_groups.sql' ),
 			array( 'addTable', 'external_user',     'patch-external_user.sql' ),
+			array( 'addTable', 'sites',             'patch-sites.sql' ),
 
 			# Needed before new field
 			array( 'convertArchive2' ),
diff --git a/maintenance/postgres/archives/patch-sites.sql b/maintenance/postgres/archives/patch-sites.sql
new file mode 100644
index 00000000000..a4f9ed9eef8
--- /dev/null
+++ b/maintenance/postgres/archives/patch-sites.sql
@@ -0,0 +1,31 @@
+CREATE SEQUENCE sites_site_id_seq;
+CREATE TABLE sites (
+  site_id           INTEGER     NOT NULL    PRIMARY KEY DEFAULT nextval('sites_site_id_seq'),
+  site_global_key   TEXT        NOT NULL,
+  site_type         TEXT        NOT NULL,
+  site_group        TEXT        NOT NULL,
+  site_source       TEXT        NOT NULL,
+  site_language     TEXT        NOT NULL,
+  site_protocol     TEXT        NOT NULL,
+  site_domain       TEXT        NOT NULL,
+  site_data         TEXT        NOT NULL,
+  site_forward      SMALLINT    NOT NULL,
+  site_config       TEXT        NOT NULL
+);
+CREATE UNIQUE INDEX site_global_key ON sites (site_global_key);
+CREATE INDEX site_type ON sites (site_type);
+CREATE INDEX site_group ON sites (site_group);
+CREATE INDEX site_source ON sites (site_source);
+CREATE INDEX site_language ON sites (site_language);
+CREATE INDEX site_protocol ON sites (site_protocol);
+CREATE INDEX site_domain ON sites (site_domain);
+CREATE INDEX site_forward ON sites (site_forward);
+
+CREATE TABLE site_identifiers (
+  si_site   INTEGER NOT NULL,
+  si_type   TEXT    NOT NULL,
+  si_key    TEXT    NOT NULL
+);
+CREATE UNIQUE INDEX si_type_key ON site_identifiers (si_type, si_key);
+CREATE INDEX si_site ON site_identifiers (si_site);
+CREATE INDEX si_key ON site_identifiers (si_key);
diff --git a/maintenance/postgres/tables.sql b/maintenance/postgres/tables.sql
index 845193da303..2d53150e96a 100644
--- a/maintenance/postgres/tables.sql
+++ b/maintenance/postgres/tables.sql
@@ -697,3 +697,35 @@ CREATE TABLE module_deps (
   md_deps    TEXT  NOT NULL
 );
 CREATE UNIQUE INDEX md_module_skin ON module_deps (md_module, md_skin);
+
+CREATE SEQUENCE sites_site_id_seq;
+CREATE TABLE sites (
+  site_id           INTEGER     NOT NULL    PRIMARY KEY DEFAULT nextval('sites_site_id_seq'),
+  site_global_key   TEXT        NOT NULL,
+  site_type         TEXT        NOT NULL,
+  site_group        TEXT        NOT NULL,
+  site_source       TEXT        NOT NULL,
+  site_language     TEXT        NOT NULL,
+  site_protocol     TEXT        NOT NULL,
+  site_domain       TEXT        NOT NULL,
+  site_data         TEXT        NOT NULL,
+  site_forward      SMALLINT    NOT NULL,
+  site_config       TEXT        NOT NULL
+);
+CREATE UNIQUE INDEX site_global_key ON sites (site_global_key);
+CREATE INDEX site_type ON sites (site_type);
+CREATE INDEX site_group ON sites (site_group);
+CREATE INDEX site_source ON sites (site_source);
+CREATE INDEX site_language ON sites (site_language);
+CREATE INDEX site_protocol ON sites (site_protocol);
+CREATE INDEX site_domain ON sites (site_domain);
+CREATE INDEX site_forward ON sites (site_forward);
+
+CREATE TABLE site_identifiers (
+  si_site   INTEGER NOT NULL,
+  si_type   TEXT    NOT NULL,
+  si_key    TEXT    NOT NULL
+);
+CREATE UNIQUE INDEX si_type_key ON site_identifiers (si_type, si_key);
+CREATE INDEX si_site ON site_identifiers (si_site);
+CREATE INDEX si_key ON site_identifiers (si_key);