diff --git a/lerna.json b/lerna.json
index fa71e1ce..37e443a1 100644
--- a/lerna.json
+++ b/lerna.json
@@ -1,7 +1,8 @@
 {
   "packages": [
     "packages/*",
-    "plugins/*"
+    "plugins/*",
+    "test"
   ],
   "version": "2.0.0-alpha.5"
 }
diff --git a/package.json b/package.json
index 091a03b4..ce16a81f 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "root",
   "private": true,
   "scripts": {
-    "test": "mocha --check-leaks -R spec --recursive test plugins/global_chat/test plugins/research_sync/test plugins/statistics_exporter/test plugins/subspace_storage/test plugins/player_auth/test",
+    "test": "mocha --check-leaks -R spec --exclude \"**/node_modules/**\" --recursive test plugins/global_chat/test plugins/research_sync/test plugins/statistics_exporter/test plugins/subspace_storage/test plugins/player_auth/test",
     "fast-test": "FAST_TEST=y npm test",
     "cover": "nyc npm test",
     "fast-cover": "FAST_TEST=y nyc npm test",
@@ -21,22 +21,10 @@
     "node": ">=10.16 <11 || >= 12"
   },
   "devDependencies": {
-    "@clusterio/ctl": "file:./packages/ctl",
-    "@clusterio/lib": "file:./packages/lib",
-    "@clusterio/master": "file:packages/master",
-    "@clusterio/slave": "file:./packages/slave",
-    "body-parser": "^1.18.2",
     "eslint": "^7.2.0",
-    "express": "^4.16.2",
-    "fs-extra": "^8.1.0",
     "jsdoc": "^3.6.3",
-    "jsonwebtoken": "^8.2.1",
-    "jszip": "^3.2.2",
-    "lerna": "^3.22.1",
+    "lerna": "^4.0.0",
     "mocha": "^6.2.0",
-    "node-forge": "^0.10.0",
-    "nyc": "^14.1.1",
-    "phin": "^3.4.1",
-    "webpack": "^5.0.0"
+    "nyc": "^14.1.1"
   }
 }
diff --git a/packages/master/package.json b/packages/master/package.json
index 1e1e57dd..0ceff75e 100644
--- a/packages/master/package.json
+++ b/packages/master/package.json
@@ -6,7 +6,7 @@
   "version": "2.0.0-alpha.5",
   "main": "master.js",
   "scripts": {
-    "build": "webpack-cli --env.production",
+    "build": "webpack-cli --env production",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "bin": {
@@ -40,7 +40,8 @@
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
     "react-router-dom": "^5.2.0",
-    "webpack-cli": "^3.3.12",
+    "webpack": "^5.36.2",
+    "webpack-cli": "^4.7.0",
     "webpack-dev-middleware": "^4.1.0",
     "webpack-merge": "^5.2.0"
   },
diff --git a/packages/slave/package.json b/packages/slave/package.json
index e19303c4..0ec58391 100644
--- a/packages/slave/package.json
+++ b/packages/slave/package.json
@@ -20,7 +20,7 @@
   "dependencies": {
     "@clusterio/lib": "^2.0.0-alpha.5",
     "fs-extra": "^8.1.0",
-    "phin": "^3.4.1",
+    "phin": "^3.5.1",
     "pidusage": "^2.0.18",
     "set-blocking": "^2.0.0",
     "winston": "^3.3.3",
diff --git a/packages/web_ui/package.json b/packages/web_ui/package.json
index c9649974..f7ca7056 100644
--- a/packages/web_ui/package.json
+++ b/packages/web_ui/package.json
@@ -34,7 +34,8 @@
     "react-dom": "^16.13.1",
     "react-router-dom": "^5.2.0",
     "style-loader": "^2.0.0",
-    "util": "^0.12.3"
+    "util": "^0.12.3",
+    "webpack": "^5.36.2"
   },
   "publishConfig": {
     "access": "public"
diff --git a/plugins/global_chat/package.json b/plugins/global_chat/package.json
index 594fec72..cf128391 100644
--- a/plugins/global_chat/package.json
+++ b/plugins/global_chat/package.json
@@ -7,18 +7,23 @@
   "license": "MIT",
   "repository": "clusterio/factorioClusterio",
   "scripts": {
-    "build": "webpack-cli --env.production",
+    "build": "webpack-cli --env production",
     "test": "echo \"Error: run tests from root\" && exit 1"
   },
   "bugs": {
     "url": "https://github.com/clusterio/factorioClusterio/issues"
   },
+  "engines": {
+    "node": ">=10.16 <11 || >= 12"
+  },
   "peerDependencies": {
     "@clusterio/lib": "^2.0.0-alpha.0"
   },
   "devDependencies": {
+    "@clusterio/lib": "^2.0.0-alpha.5",
     "@clusterio/web_ui": "^2.0.0-alpha.5",
-    "webpack-cli": "^3.3.12",
+    "webpack": "^5.36.2",
+    "webpack-cli": "^4.7.0",
     "webpack-merge": "^5.2.0"
   },
   "publishConfig": {
diff --git a/plugins/player_auth/package.json b/plugins/player_auth/package.json
index a83f8041..8d7a141e 100644
--- a/plugins/player_auth/package.json
+++ b/plugins/player_auth/package.json
@@ -7,12 +7,15 @@
   "license": "MIT",
   "repository": "clusterio/factorioClusterio",
   "scripts": {
-    "build": "webpack-cli --env.production",
+    "build": "webpack-cli --env production",
     "test": "echo \"Error: run tests from root\" && exit 1"
   },
   "bugs": {
     "url": "https://github.com/clusterio/factorioClusterio/issues"
   },
+  "engines": {
+    "node": ">=10.16 <11 || >= 12"
+  },
   "peerDependencies": {
     "@clusterio/lib": "^2.0.0-alpha.0"
   },
@@ -20,12 +23,14 @@
     "jsonwebtoken": "^8.2.1"
   },
   "devDependencies": {
+    "@clusterio/lib": "^2.0.0-alpha.5",
     "@clusterio/web_ui": "^2.0.0-alpha.5",
     "antd": "^4.6.5",
-    "phin": "^3.4.1",
+    "phin": "^3.5.1",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
-    "webpack-cli": "^3.3.12",
+    "webpack": "^5.36.2",
+    "webpack-cli": "^4.7.0",
     "webpack-merge": "^5.2.0"
   },
   "publishConfig": {
diff --git a/plugins/research_sync/package.json b/plugins/research_sync/package.json
index a672a29a..fbc21d5f 100644
--- a/plugins/research_sync/package.json
+++ b/plugins/research_sync/package.json
@@ -7,12 +7,15 @@
   "license": "MIT",
   "repository": "clusterio/factorioClusterio",
   "scripts": {
-    "build": "webpack-cli --env.production",
+    "build": "webpack-cli --env production",
     "test": "echo \"Error: run tests from root\" && exit 1"
   },
   "bugs": {
     "url": "https://github.com/clusterio/factorioClusterio/issues"
   },
+  "engines": {
+    "node": ">=10.16 <11 || >= 12"
+  },
   "peerDependencies": {
     "@clusterio/lib": "^2.0.0-alpha.0"
   },
@@ -20,8 +23,10 @@
     "fs-extra": "^8.1.0"
   },
   "devDependencies": {
+    "@clusterio/lib": "^2.0.0-alpha.5",
     "@clusterio/web_ui": "^2.0.0-alpha.5",
-    "webpack-cli": "^3.3.12",
+    "webpack": "^5.36.2",
+    "webpack-cli": "^4.7.0",
     "webpack-merge": "^5.2.0"
   },
   "publishConfig": {
diff --git a/plugins/statistics_exporter/package.json b/plugins/statistics_exporter/package.json
index b74fdb36..24b8865a 100644
--- a/plugins/statistics_exporter/package.json
+++ b/plugins/statistics_exporter/package.json
@@ -7,18 +7,23 @@
   "license": "MIT",
   "repository": "clusterio/factorioClusterio",
   "scripts": {
-    "build": "webpack-cli --env.production",
+    "build": "webpack-cli --env production",
     "test": "echo \"Error: run tests from root\" && exit 1"
   },
   "bugs": {
     "url": "https://github.com/clusterio/factorioClusterio/issues"
   },
+  "engines": {
+    "node": ">=10.16 <11 || >= 12"
+  },
   "peerDependencies": {
     "@clusterio/lib": "^2.0.0-alpha.0"
   },
   "devDependencies": {
+    "@clusterio/lib": "^2.0.0-alpha.5",
     "@clusterio/web_ui": "^2.0.0-alpha.5",
-    "webpack-cli": "^3.3.12",
+    "webpack": "^5.36.2",
+    "webpack-cli": "^4.7.0",
     "webpack-merge": "^5.2.0"
   },
   "publishConfig": {
diff --git a/plugins/subspace_storage/package.json b/plugins/subspace_storage/package.json
index f19c62c4..a29c638c 100644
--- a/plugins/subspace_storage/package.json
+++ b/plugins/subspace_storage/package.json
@@ -7,12 +7,15 @@
   "license": "MIT",
   "repository": "clusterio/factorioClusterio",
   "scripts": {
-    "build": "webpack-cli --env.production",
+    "build": "webpack-cli --env production",
     "test": "echo \"Error: run tests from root\" && exit 1"
   },
   "bugs": {
     "url": "https://github.com/clusterio/factorioClusterio/issues"
   },
+  "engines": {
+    "node": ">=10.16 <11 || >= 12"
+  },
   "peerDependencies": {
     "@clusterio/lib": "^2.0.0-alpha.0"
   },
@@ -20,11 +23,13 @@
     "fs-extra": "^8.1.0"
   },
   "devDependencies": {
+    "@clusterio/lib": "^2.0.0-alpha.5",
     "@clusterio/web_ui": "^2.0.0-alpha.5",
     "antd": "^4.6.5",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
-    "webpack-cli": "^3.3.12",
+    "webpack": "^5.36.2",
+    "webpack-cli": "^4.7.0",
     "webpack-merge": "^5.2.0"
   },
   "publishConfig": {
diff --git a/test/package.json b/test/package.json
new file mode 100644
index 00000000..b1e3fc98
--- /dev/null
+++ b/test/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "test",
+  "private": true,
+  "engines": {
+    "node": ">=10.16 <11 || >= 12"
+  },
+  "dependencies": {
+    "@clusterio/ctl": "2.0.0-alpha.5",
+    "@clusterio/lib": "2.0.0-alpha.5",
+    "@clusterio/master": "2.0.0-alpha.5",
+    "@clusterio/slave": "2.0.0-alpha.5",
+    "node-forge": "^0.10.0",
+    "phin": "^3.5.1"
+  }
+}