diff --git a/appengine/app.yaml b/appengine/app.yaml
index 8938830f8..04f6faee2 100644
--- a/appengine/app.yaml
+++ b/appengine/app.yaml
@@ -1,5 +1,5 @@
 application: blockly-demo
-version: 1
+version: 20190419
 runtime: python27
 api_version: 1
 threadsafe: no
diff --git a/package.json b/package.json
index 4b41291a3..b94f0bce3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "blockly",
-  "version": "1.20190215.0-develop",
+  "version": "1.20190419.0",
   "description": "Blockly is a library for building visual programming editors.",
   "main": "blockly_node_javascript_en.js",
   "keywords": [