diff --git a/pxt.json b/pxt.json
index bd5c933..5303638 100644
--- a/pxt.json
+++ b/pxt.json
@@ -1,6 +1,6 @@
 {
     "name": "pxt-callicross",
-    "version": "1.2.0",
+    "version": "1.2.1",
     "description": "Extension for the CalliCross I2C traffic simulation ",
     "dependencies": {
         "core": "*",