diff --git a/package.json b/package.json
index d4deae8..e2b5896 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cytoscape-expand-collapse",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "This extension provides an interface to expand-collapse nodes.",
   "main": "src/index.js",
   "spm": {