diff --git a/.gitignore b/.gitignore
index 56c8fbd4..f3818817 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,6 +45,9 @@ static/export
 saves
 /temp/
 
+# Web build
+/packages/master/static
+
 # IDE
 .idea/
 .vs/
diff --git a/packages/ctl/package.json b/packages/ctl/package.json
index 53ce9876..da0dc2cb 100644
--- a/packages/ctl/package.json
+++ b/packages/ctl/package.json
@@ -18,7 +18,7 @@
     "node": ">=10.16 <11 || >= 11.13"
   },
   "dependencies": {
-    "@clusterio/lib": "=2.0.0-alpha.0",
+    "@clusterio/lib": "^2.0.0-alpha.0",
     "as-table": "^1.0.31",
     "chalk": "^3.0.0",
     "fs-extra": "^8.1.0",
diff --git a/packages/lib/package.json b/packages/lib/package.json
index 52a9d77b..e4617f7d 100644
--- a/packages/lib/package.json
+++ b/packages/lib/package.json
@@ -11,6 +11,7 @@
     "node": ">=10.16 <11 || >= 11.13"
   },
   "dependencies": {
+    "ajv": "^6.12.6",
     "fs-extra": "^8.1.0",
     "ini": "^1.3.5",
     "isomorphic-ws": "^4.0.1",
diff --git a/packages/master/.gitignore b/packages/master/.gitignore
deleted file mode 100644
index 4d2280f9..00000000
--- a/packages/master/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-# Webpack output
-static
diff --git a/packages/master/package.json b/packages/master/package.json
index 333e6205..1289c6c4 100644
--- a/packages/master/package.json
+++ b/packages/master/package.json
@@ -19,7 +19,7 @@
     "node": ">=10.16 <11 || >= 11.13"
   },
   "dependencies": {
-    "@clusterio/lib": "=2.0.0-alpha.0",
+    "@clusterio/lib": "^2.0.0-alpha.0",
     "body-parser": "^1.18.2",
     "compression": "^1.7.2",
     "cookie-parser": "^1.4.3",
diff --git a/packages/slave/package.json b/packages/slave/package.json
index f9d2ff22..997fd3ae 100644
--- a/packages/slave/package.json
+++ b/packages/slave/package.json
@@ -18,7 +18,7 @@
     "node": ">=10.16 <11 || >= 11.13"
   },
   "dependencies": {
-    "@clusterio/lib": "=2.0.0-alpha.0",
+    "@clusterio/lib": "^2.0.0-alpha.0",
     "fs-extra": "^8.1.0",
     "phin": "^3.4.1",
     "pidusage": "^2.0.18",