diff --git a/CHANGES.md b/CHANGES.md
index 92edd9d1c..55f8680dc 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,11 +1,11 @@
 # Changelog
 
-# v 1.33
+# v 1.33 - 2017-12-07
 
 * Changes
   * Animate olcs.contrib.Manager#toggle3d.
   * Add support for Overlay synchronization, see example Overlays.
-  * Port to OpenLayers 4.6.2 and Cesium 1.39.
+  * Port to OpenLayers 4.6.2 and Cesium 1.40.
   * Restore OpenLayers events propagation.
   * Workaround camera sinking under the terrain and finally jumping above it.
     See https://github.com/AnalyticalGraphicsInc/cesium/issues/5999. The
diff --git a/examples/vectors.js b/examples/vectors.js
index d00c5ba25..e29056423 100644
--- a/examples/vectors.js
+++ b/examples/vectors.js
@@ -27,9 +27,7 @@ goog.require('ol.format.GPX');
 goog.require('ol.geom.Polygon');
 goog.require('ol.interaction.DragAndDrop');
 goog.require('ol.geom.MultiPolygon');
-goog.require('ol.layer.Image');
 goog.require('ol.layer.Vector');
-goog.require('ol.source.ImageVector');
 
 
 const iconFeature = new ol.Feature({
@@ -234,12 +232,9 @@ const vectorSource2 = new ol.source.Vector({
   features: [iconFeature, textFeature, cervinFeature, cartographicRectangle,
     cartographicRectangle2]
 });
-const imageVectorSource = new ol.source.ImageVector({
+const vectorLayer2 = new ol.layer.Vector({
   source: vectorSource2
 });
-const vectorLayer2 = new ol.layer.Image({
-  source: imageVectorSource
-});
 
 const dragAndDropInteraction = new ol.interaction.DragAndDrop({
   formatConstructors: [
diff --git a/package.json b/package.json
index 5f7327ac5..77b9350da 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ol-cesium",
-  "version": "1.32.0",
+  "version": "1.33.0",
   "description": "OpenLayers Cesium integration library",
   "scripts": {},
   "main": "./dist/olcesium.js",
@@ -17,7 +17,7 @@
     "htmlparser2": "3.9.2"
   },
   "devDependencies": {
-    "@camptocamp/cesium": "1.39.1",
+    "@camptocamp/cesium": "1.40.0",
     "@camptocamp/closure-util": "1.26.0",
     "@mapbox/geojsonhint": "2.0.1",
     "eslint": "4.12.0",