diff --git a/.gitignore b/.gitignore
index 64983670..a0f62a32 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,3 +36,4 @@ release/
 release*
 Cross.toml
 /tools
+*.cozo_auth
\ No newline at end of file
diff --git a/VERSION b/VERSION
index 9325c3cc..60a2d3e9 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.3.0
\ No newline at end of file
+0.4.0
\ No newline at end of file
diff --git a/cozo-core/Cargo.toml b/cozo-core/Cargo.toml
index 50fb43ba..0ac1de97 100644
--- a/cozo-core/Cargo.toml
+++ b/cozo-core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cozo"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 description = "A general-purpose, transactional, relational database that uses Datalog and focuses on graph data and algorithms"
 authors = ["Ziyang Hu"]
diff --git a/cozo-lib-c/Cargo.toml b/cozo-lib-c/Cargo.toml
index 80b0c52f..1fabc9d2 100644
--- a/cozo-lib-c/Cargo.toml
+++ b/cozo-lib-c/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cozo_c"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 license = "MPL-2.0"
 homepage = "https://github.com/cozodb/cozo"
@@ -38,7 +38,7 @@ io-uring = ["cozo/io-uring"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-cozo = { version = "0.3.0", path = "../cozo-core", default_features = false }
+cozo = { version = "0.4.0", path = "../cozo-core", default_features = false }
 lazy_static = "1.4.0"
 
 [build-dependencies]
diff --git a/cozo-lib-java/Cargo.toml b/cozo-lib-java/Cargo.toml
index c283f1cd..007518e5 100644
--- a/cozo-lib-java/Cargo.toml
+++ b/cozo-lib-java/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cozo_java"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 license = "MPL-2.0"
 homepage = "https://github.com/cozodb/cozo"
@@ -40,5 +40,5 @@ io-uring = ["cozo/io-uring"]
 [dependencies]
 jni = "0.20.0"
 # , features = ["compact"]
-cozo = { version = "0.3.0", path = "../cozo-core", default_features = false, features = ["compact"] }
+cozo = { version = "0.4.0", path = "../cozo-core", default_features = false, features = ["compact"] }
 lazy_static = "1.4.0"
diff --git a/cozo-lib-nodejs/Cargo.toml b/cozo-lib-nodejs/Cargo.toml
index 40daf156..150ce2b0 100644
--- a/cozo-lib-nodejs/Cargo.toml
+++ b/cozo-lib-nodejs/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cozo-node"
-version = "0.3.0"
+version = "0.4.0"
 description = "Cozo database for NodeJS"
 authors = ["Ziyang Hu"]
 license = "MPL-2.0"
@@ -40,7 +40,7 @@ io-uring = ["cozo/io-uring"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-cozo = { version = "0.3.0", path = "../cozo-core", default-features = false }
+cozo = { version = "0.4.0", path = "../cozo-core", default-features = false }
 lazy_static = "1.4.0"
 
 [dependencies.neon]
diff --git a/cozo-lib-nodejs/package.json b/cozo-lib-nodejs/package.json
index 23369618..32b8604f 100644
--- a/cozo-lib-nodejs/package.json
+++ b/cozo-lib-nodejs/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cozo-node",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "description": "Cozo database for NodeJS",
   "main": "index",
   "files": [
diff --git a/cozo-lib-python/Cargo.toml b/cozo-lib-python/Cargo.toml
index f065b533..835db4db 100644
--- a/cozo-lib-python/Cargo.toml
+++ b/cozo-lib-python/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cozo_py"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 description = "Cozo database for python"
 authors = ["Ziyang Hu"]
@@ -41,5 +41,5 @@ io-uring = ["cozo/io-uring"]
 
 
 [dependencies]
-cozo = { version = "0.3.0", path = "../cozo-core", default-features = false }
+cozo = { version = "0.4.0", path = "../cozo-core", default-features = false }
 pyo3 = { version = "0.17.1", features = ["extension-module", "abi3", "abi3-py37"] }
diff --git a/cozo-lib-swift/Cargo.toml b/cozo-lib-swift/Cargo.toml
index 3135f589..eb5da97c 100644
--- a/cozo-lib-swift/Cargo.toml
+++ b/cozo-lib-swift/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cozo-swift"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 description = "Cozo database for Swift"
 authors = ["Ziyang Hu"]
@@ -40,5 +40,5 @@ io-uring = ["cozo/io-uring"]
 swift-bridge-build = "0.1.41"
 
 [dependencies]
-cozo = { version = "0.3.0", path = "../cozo-core", default-features = false }
+cozo = { version = "0.4.0", path = "../cozo-core", default-features = false }
 swift-bridge = "0.1.41"
diff --git a/cozo-lib-swift/CozoSwiftBridge.podspec b/cozo-lib-swift/CozoSwiftBridge.podspec
index b2a70a5a..877e34d9 100644
--- a/cozo-lib-swift/CozoSwiftBridge.podspec
+++ b/cozo-lib-swift/CozoSwiftBridge.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
   spec.name         = "CozoSwiftBridge"
-  spec.version      = "0.3.0"
+  spec.version      = "0.4.0"
   spec.summary      = "CozoDB for Swift"
   spec.description  = "This library allows you to use CozoDB embedded in your Swift application"
   spec.homepage     = "https://github.com/cozodb/cozo/"
diff --git a/cozo-lib-swift/README-zh.md b/cozo-lib-swift/README-zh.md
index 699b2460..d05655c7 100644
--- a/cozo-lib-swift/README-zh.md
+++ b/cozo-lib-swift/README-zh.md
@@ -22,7 +22,7 @@ see the Building section below.
 target 'YourApp' do
   use_frameworks!
 
-  pod 'CozoSwiftBridge', '~> 0.3.0'
+  pod 'CozoSwiftBridge', '~> 0.4.0'
 end
 ```
 
diff --git a/cozo-lib-swift/README.md b/cozo-lib-swift/README.md
index 1f566545..05740f36 100644
--- a/cozo-lib-swift/README.md
+++ b/cozo-lib-swift/README.md
@@ -22,7 +22,7 @@ see the Building section below.
 target 'YourApp' do
   use_frameworks!
 
-  pod 'CozoSwiftBridge', '~> 0.3.0'
+  pod 'CozoSwiftBridge', '~> 0.4.0'
 end
 ```
 
diff --git a/cozo-lib-wasm/Cargo.toml b/cozo-lib-wasm/Cargo.toml
index c921dfd0..4b3fb9bc 100644
--- a/cozo-lib-wasm/Cargo.toml
+++ b/cozo-lib-wasm/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cozo-lib-wasm"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 description = "Cozo database for WASM"
 authors = ["Ziyang Hu"]
@@ -17,7 +17,7 @@ default = ["console_error_panic_hook"]
 
 [dependencies]
 wasm-bindgen = "0.2.63"
-cozo = { version = "0.3.0", path = "../cozo-core", default-features = false, features = ["wasm"] }
+cozo = { version = "0.4.0", path = "../cozo-core", default-features = false, features = ["wasm"] }
 
 # The `console_error_panic_hook` crate provides better debugging of panics by
 # logging them with `console.error`. This is great for development, but requires
diff --git a/cozo-lib-wasm/wasm-react-demo/public/index.html b/cozo-lib-wasm/wasm-react-demo/public/index.html
index 9b127af5..183c0dea 100644
--- a/cozo-lib-wasm/wasm-react-demo/public/index.html
+++ b/cozo-lib-wasm/wasm-react-demo/public/index.html
@@ -26,6 +26,15 @@
   </head>
   <body>
     <noscript>You need to enable JavaScript to run this app.</noscript>
+    <!-- Google tag (gtag.js) -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=G-S7J5ENQE6M"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+
+      gtag('config', 'G-S7J5ENQE6M');
+    </script>
     <div id="root"></div>
     <!--
       This HTML file is a template.
diff --git a/cozoserver/Cargo.toml b/cozoserver/Cargo.toml
index 87bc9db9..833649ca 100644
--- a/cozoserver/Cargo.toml
+++ b/cozoserver/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cozoserver"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 license = "MPL-2.0"
 description = "Standalone Cozo database"
@@ -42,7 +42,7 @@ storage-tikv = ["cozo/storage-tikv"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-cozo = { version = "0.3.0", path = "../cozo-core", default-features = false }
+cozo = { version = "0.4.0", path = "../cozo-core", default-features = false }
 clap = { version = "4.0.26", features = ["derive"] }
 rouille = "3.5.0"
 env_logger = "0.10.0"