diff --git a/package.json b/package.json
index 62552e7..d54ebe8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ohms-law",
-  "version": "1.3.8",
+  "version": "1.3.9-rc.1",
   "license": "GPL-3.0",
   "repository": {
     "type": "git",