diff --git a/lib/db/install.xml b/lib/db/install.xml
index 0643897ce64..a78c07b9b99 100644
--- a/lib/db/install.xml
+++ b/lib/db/install.xml
@@ -4300,5 +4300,24 @@
         <KEY NAME="userid" TYPE="foreign" FIELDS="userid" REFTABLE="user" REFFIELDS="id" COMMENT="Foreign key for the userid"/>
       </KEYS>
     </TABLE>
+    <TABLE NAME="oauth2_refresh_token" COMMENT="Stores refresh tokens which can be exchanged for access tokens">
+      <FIELDS>
+        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="true"/>
+        <FIELD NAME="timecreated" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false" COMMENT="Time this record was created."/>
+        <FIELD NAME="timemodified" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false" COMMENT="Time this record was modified."/>
+        <FIELD NAME="userid" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false" COMMENT="The user to whom this refresh token belongs."/>
+        <FIELD NAME="issuerid" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false" COMMENT="Corresponding oauth2 issuer"/>
+        <FIELD NAME="token" TYPE="text" NOTNULL="true" SEQUENCE="false" COMMENT="refresh token"/>
+        <FIELD NAME="scopehash" TYPE="char" LENGTH="40" NOTNULL="true" SEQUENCE="false" COMMENT="sha1 hash of the scopes used when requesting the refresh token"/>
+      </FIELDS>
+      <KEYS>
+        <KEY NAME="primary" TYPE="primary" FIELDS="id"/>
+        <KEY NAME="issueridkey" TYPE="foreign" FIELDS="issuerid" REFTABLE="oauth2_issuer" REFFIELDS="id" COMMENT="Issuer id foreign key"/>
+        <KEY NAME="useridkey" TYPE="foreign" FIELDS="userid" REFTABLE="user" REFFIELDS="id" COMMENT="User id foreign key"/>
+      </KEYS>
+      <INDEXES>
+        <INDEX NAME="userid-issuerid-scopehash" UNIQUE="true" FIELDS="userid, issuerid, scopehash"/>
+      </INDEXES>
+    </TABLE>
   </TABLES>
 </XMLDB>
\ No newline at end of file
diff --git a/lib/db/upgrade.php b/lib/db/upgrade.php
index 41b2f5c5967..2a27ce60697 100644
--- a/lib/db/upgrade.php
+++ b/lib/db/upgrade.php
@@ -2708,5 +2708,35 @@ function xmldb_main_upgrade($oldversion) {
         upgrade_main_savepoint(true, 2021052500.15);
     }
 
+    if ($oldversion < 2021052500.19) {
+        // Define table oauth2_refresh_token to be created.
+        $table = new xmldb_table('oauth2_refresh_token');
+
+        // Adding fields to table oauth2_refresh_token.
+        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
+        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
+        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
+        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
+        $table->add_field('issuerid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
+        $table->add_field('token', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null);
+        $table->add_field('scopehash', XMLDB_TYPE_CHAR, 40, null, XMLDB_NOTNULL, null, null);
+
+        // Adding keys to table oauth2_refresh_token.
+        $table->add_key('primary', XMLDB_KEY_PRIMARY, ['id']);
+        $table->add_key('issueridkey', XMLDB_KEY_FOREIGN, ['issuerid'], 'oauth2_issuer', ['id']);
+        $table->add_key('useridkey', XMLDB_KEY_FOREIGN, ['userid'], 'user', ['id']);
+
+        // Adding indexes to table oauth2_refresh_token.
+        $table->add_index('userid-issuerid-scopehash', XMLDB_INDEX_UNIQUE, array('userid', 'issuerid', 'scopehash'));
+
+        // Conditionally launch create table for oauth2_refresh_token.
+        if (!$dbman->table_exists($table)) {
+            $dbman->create_table($table);
+        }
+
+        // Main savepoint reached.
+        upgrade_main_savepoint(true, 2021052500.19);
+    }
+
     return true;
 }
diff --git a/version.php b/version.php
index 6f90f7172e8..c18016b3e90 100644
--- a/version.php
+++ b/version.php
@@ -29,7 +29,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$version  = 2021052500.18;              // YYYYMMDD      = weekly release date of this DEV branch.
+$version  = 2021052500.19;              // YYYYMMDD      = weekly release date of this DEV branch.
                                         //         RR    = release increments - 00 in DEV branches.
                                         //           .XX = incremental changes.
 $release  = '4.0dev (Build: 20201002)'; // Human-friendly version name