diff --git a/package-lock.json b/package-lock.json
index e86a0c4..9ab94e1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@screeps/common",
-  "version": "2.15.4",
+  "version": "2.15.5-rc1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 9dffd34..2891036 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@screeps/common",
-  "version": "2.15.4",
+  "version": "2.15.5-rc1",
   "description": "",
   "main": "index.js",
   "author": "Artem Chivchalov <contact@screeps.com>",