diff --git a/package-lock.json b/package-lock.json
index 920ae8d..38957fd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "screeps",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -74,9 +74,9 @@
       }
     },
     "@screeps/engine": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/@screeps/engine/-/engine-4.2.0.tgz",
-      "integrity": "sha512-WsNCS5oiZegOdAsIDboX4YDCBRk+REWnf0XtAQ7Fd2HjhDTxgn0KavlN/EaNI4AcfA8Q2VSPBpNC+2rLLQtIsA==",
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/@screeps/engine/-/engine-4.2.1.tgz",
+      "integrity": "sha512-A0w0GoyDfoKKQvi/NyC/InumVmmqa+0ExoEoJrFLeQxxVdyLWFIPHwUMSTDz+texsCCQcUx9OTeCuYy/quGLmA==",
       "requires": {
         "@screeps/pathfinding": "^0.4.16",
         "bulk-require": "^0.2.1",
diff --git a/package.json b/package.json
index 51893e4..84dd365 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "screeps",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "A standalone server for programming game Screeps",
   "main": "package.json",
   "bin": {
@@ -16,7 +16,7 @@
     "@screeps/backend": "3.2.0",
     "@screeps/common": "2.15.0",
     "@screeps/driver": "5.2.0",
-    "@screeps/engine": "4.2.0",
+    "@screeps/engine": "4.2.1",
     "@screeps/launcher": "4.1.0",
     "@screeps/pathfinding": "0.4.16",
     "@screeps/storage": "5.1.1"