diff --git a/app/sql.js b/app/sql.js
index 1160c50e6..c20a0ca38 100644
--- a/app/sql.js
+++ b/app/sql.js
@@ -487,13 +487,50 @@ async function updateToSchemaVersion6(currentVersion, instance) {
   console.log('updateToSchemaVersion6: success!');
 }
 
+async function updateToSchemaVersion7(currentVersion, instance) {
+  if (currentVersion >= 7) {
+    return;
+  }
+  console.log('updateToSchemaVersion7: starting...');
+  await instance.run('BEGIN TRANSACTION;');
+
+  // SQLite has been coercing our STRINGs into numbers, so we force it with TEXT
+  // We create a new table then copy the data into it, since we can't modify columns
+
+  await instance.run('DROP INDEX sessions_number;');
+  await instance.run('ALTER TABLE sessions RENAME TO sessions_old;');
+
+  await instance.run(
+    `CREATE TABLE sessions(
+      id TEXT PRIMARY KEY,
+      number TEXT,
+      json TEXT
+    );`
+  );
+
+  await instance.run(`CREATE INDEX sessions_number ON sessions (
+    number
+  ) WHERE number IS NOT NULL;`);
+
+  await instance.run(`INSERT INTO sessions(id, number, json)
+    SELECT "+" || id, number, json FROM sessions_old;
+  `);
+
+  await instance.run('DROP TABLE sessions_old;');
+
+  await instance.run('PRAGMA schema_version = 7;');
+  await instance.run('COMMIT TRANSACTION;');
+  console.log('updateToSchemaVersion7: success!');
+}
+
 const SCHEMA_VERSIONS = [
   updateToSchemaVersion1,
   updateToSchemaVersion2,
   updateToSchemaVersion3,
   updateToSchemaVersion4,
-  // version 5 was dropped
+  () => null, // version 5 was dropped
   updateToSchemaVersion6,
+  updateToSchemaVersion7,
 ];
 
 async function updateSchema(instance) {
diff --git a/package.json b/package.json
index cce536cd7..b3bce31c9 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "productName": "Loki Messenger",
   "description": "Private messaging from your desktop",
   "repository": "https://github.com/sloki-project/loki-messenger.git",
-  "version": "1.18.0",
+  "version": "1.18.1",
   "license": "GPL-3.0",
   "author": {
     "name": "Open Whisper Systems",
diff --git a/test/storage_test.js b/test/storage_test.js
index f127591f4..49370e298 100644
--- a/test/storage_test.js
+++ b/test/storage_test.js
@@ -941,7 +941,7 @@ describe('SignalProtocolStore', () => {
   describe('getDeviceIds', () => {
     it('returns deviceIds for a number', async () => {
       const testRecord = 'an opaque string';
-      const devices = [1, 2, 3].map(deviceId => {
+      const devices = [1, 2, 3, 10].map(deviceId => {
         return [number, deviceId].join('.');
       });
 
@@ -952,7 +952,7 @@ describe('SignalProtocolStore', () => {
       );
 
       const deviceIds = await store.getDeviceIds(number);
-      assert.sameMembers(deviceIds, [1, 2, 3]);
+      assert.sameMembers(deviceIds, [1, 2, 3, 10]);
     });
     it('returns empty array for a number with no device ids', async () => {
       const deviceIds = await store.getDeviceIds('foo');