diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a8a862..5b2668d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,13 @@
 ChangeLog
 =========
 
+0.4.0 (????-??-??)
+------------------
+
+* #472: If you were using Sqlite, Cal- CardDAV clients might have missed
+  updates from the server.
+
+
 0.3.5 (2016-02-24)
 ------------------
 
diff --git a/Core/Distrib.php b/Core/Distrib.php
index 0c45bef..47ce1d3 100644
--- a/Core/Distrib.php
+++ b/Core/Distrib.php
@@ -24,5 +24,5 @@
 #  This copyright notice MUST APPEAR in all copies of the script!
 #################################################################
 
-define("BAIKAL_VERSION", "0.3.5");
+define("BAIKAL_VERSION", "0.4.0");
 define("BAIKAL_HOMEPAGE", "http://baikal-server.com");
diff --git a/Core/Frameworks/BaikalAdmin/Controller/Install/VersionUpgrade.php b/Core/Frameworks/BaikalAdmin/Controller/Install/VersionUpgrade.php
index 230e71b..6978d35 100644
--- a/Core/Frameworks/BaikalAdmin/Controller/Install/VersionUpgrade.php
+++ b/Core/Frameworks/BaikalAdmin/Controller/Install/VersionUpgrade.php
@@ -151,9 +151,10 @@ HTML;
 			}
 		}
 
+        $pdo = $GLOBALS['DB']->getPDO();
         if(version_compare($sVersionFrom, '0.3.0', '<')) {
             // Upgrading from sabre/dav 1.8 schema to 3.1 schema.
-            $pdo = $GLOBALS['DB']->getPDO();
+
             if(defined("PROJECT_DB_MYSQL") && PROJECT_DB_MYSQL === TRUE) {
 
                 // MySQL upgrade
@@ -377,6 +378,54 @@ HTML;
             $this->aSuccess[] = 'vcardurl was migrated to the propertystorage system';
 
 		}
+        if(version_compare($sVersionFrom, '0.4.0', '<')) {
+
+            // The sqlite schema had issues with both the calendar and
+            // addressbooks tables. The tables didn't have a DEFAULT '1' for
+            // the synctoken column. So we're adding it now.
+            if(!defined("PROJECT_DB_MYSQL") || PROJECT_DB_MYSQL === FALSE) {
+
+                $pdo->exec('UPDATE calendars SET synctoken = 1 WHERE synctoken IS NULL');
+                $pdo->exec('UPDATE addressbooks SET synctoken = 1 WHERE synctoken IS NULL');
+
+                $tmpTable = '_' . time();
+                $pdo->exec('ALTER TABLE calendars RENAME TO calendars' . $tmpTable);
+                $pdo->exec('ALTER TABLE addressbooks RENAME TO addressbooks' . $tmpTable);
+
+                $pdo->exec('
+CREATE TABLE addressbooks (
+    id integer primary key asc NOT NULL,
+    principaluri text NOT NULL,
+    displayname text,
+    uri text NOT NULL,
+    description text,
+    synctoken integer DEFAULT 1 NOT NULL
+);
+                ');
+
+                $pdo->exec('
+CREATE TABLE calendars (
+    id integer primary key asc NOT NULL,
+    principaluri text NOT NULL,
+    displayname text,
+    uri text NOT NULL,
+    synctoken integer DEFAULT 1 NOT NULL,
+    description text,
+    calendarorder integer,
+    calendarcolor text,
+    timezone text,
+    components text NOT NULL,
+    transparent bool
+);');
+
+                $pdo->exec('INSERT INTO calendars SELECT * FROM calendars' . $tmpTable);
+                $pdo->exec('INSERT INTO addressbooks SELECT * FROM addressbooks' . $tmpTable);
+
+                $this->aSuccess[] = 'Updated calendars and addressbooks tables';
+
+            }
+
+        }
 
 		$this->updateConfiguredVersion($sVersionTo);
 		return TRUE;