diff --git a/packages/broker/package.json b/packages/broker/package.json
index afacfa9..fd22367 100644
--- a/packages/broker/package.json
+++ b/packages/broker/package.json
@@ -1,23 +1,23 @@
 {
   "name": "@syndicate-lang/broker",
   "private": true,
-  "version": "0.0.7",
+  "version": "0.0.8",
   "license": "GPL-3.0+",
   "devDependencies": {
     "@babel/core": "^7.2.0",
     "@babel/plugin-syntax-jsx": "^7.2.0",
     "@babel/plugin-transform-react-jsx": "^7.2.0",
     "@babel/preset-env": "^7.2.0",
-    "@syndicate-lang/syntax": "0.0.21"
+    "@syndicate-lang/syntax": "^0.0.22"
   },
   "dependencies": {
-    "@syndicate-lang/core": "0.0.19",
-    "@syndicate-lang/driver-browser-ui": "0.0.17",
-    "@syndicate-lang/driver-http-node": "0.0.16",
-    "@syndicate-lang/driver-mdns": "0.0.1",
-    "@syndicate-lang/driver-streams-node": "0.0.1",
-    "@syndicate-lang/driver-timer": "0.0.20",
-    "@syndicate-lang/driver-websocket": "0.0.11",
+    "@syndicate-lang/core": "^0.0.20",
+    "@syndicate-lang/driver-browser-ui": "^0.0.18",
+    "@syndicate-lang/driver-http-node": "^0.0.17",
+    "@syndicate-lang/driver-mdns": "^0.0.2",
+    "@syndicate-lang/driver-streams-node": "^0.0.2",
+    "@syndicate-lang/driver-timer": "^0.0.21",
+    "@syndicate-lang/driver-websocket": "^0.0.12",
     "webpack": "^4.27.1",
     "webpack-cli": "^3.1.2"
   },
diff --git a/packages/core/package.json b/packages/core/package.json
index ccb6f42..3ab8a10 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@syndicate-lang/core",
-  "version": "0.0.19",
+  "version": "0.0.20",
   "description": "Imperative Syndicate in the browser",
   "homepage": "https://github.com/syndicate-lang/syndicate-js/tree/master/packages/core",
   "license": "GPL-3.0+",
diff --git a/packages/create/package.json b/packages/create/package.json
index 3b9c65c..4f8518b 100644
--- a/packages/create/package.json
+++ b/packages/create/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@syndicate-lang/create",
   "description": "Create a new Syndicate/js package",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "author": "Tony Garnock-Jones <tonyg@leastfixedpoint.com>",
   "bin": {
     "create": "./bin/run"
diff --git a/packages/driver-browser-ui/package.json b/packages/driver-browser-ui/package.json
index 7c9f329..d160554 100644
--- a/packages/driver-browser-ui/package.json
+++ b/packages/driver-browser-ui/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@syndicate-lang/driver-browser-ui",
-  "version": "0.0.17",
+  "version": "0.0.18",
   "description": "Browser-based (DOM) UI for Syndicate/js",
   "main": "lib/index.js",
   "repository": "github:syndicate-lang/syndicate-js",
@@ -16,10 +16,10 @@
   "devDependencies": {
     "@babel/core": "^7.2.0",
     "@babel/preset-env": "^7.2.0",
-    "@syndicate-lang/syntax": "0.0.21"
+    "@syndicate-lang/syntax": "^0.0.22"
   },
   "dependencies": {
-    "@syndicate-lang/core": "0.0.19",
+    "@syndicate-lang/core": "^0.0.20",
     "immutable": "^4.0.0-rc.12"
   }
 }
diff --git a/packages/driver-http-node/package.json b/packages/driver-http-node/package.json
index d0759d9..f7aadcb 100644
--- a/packages/driver-http-node/package.json
+++ b/packages/driver-http-node/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@syndicate-lang/driver-http-node",
-  "version": "0.0.16",
+  "version": "0.0.17",
   "description": "HTTP support for Syndicate/js on node.js",
   "main": "lib/index.js",
   "repository": "github:syndicate-lang/syndicate-js",
@@ -16,10 +16,10 @@
   "devDependencies": {
     "@babel/core": "^7.2.0",
     "@babel/preset-env": "^7.2.0",
-    "@syndicate-lang/syntax": "0.0.21"
+    "@syndicate-lang/syntax": "^0.0.22"
   },
   "dependencies": {
-    "@syndicate-lang/core": "0.0.19",
+    "@syndicate-lang/core": "^0.0.20",
     "ws": "^6.1.2"
   }
 }
diff --git a/packages/driver-mdns/package.json b/packages/driver-mdns/package.json
index 6164f02..0341841 100644
--- a/packages/driver-mdns/package.json
+++ b/packages/driver-mdns/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@syndicate-lang/driver-mdns",
-  "version": "0.0.1",
+  "version": "0.0.2",
   "description": "mDNS support for Syndicate/js via Avahi",
   "main": "lib/index.js",
   "repository": "github:syndicate-lang/syndicate-js",
@@ -16,11 +16,11 @@
   "devDependencies": {
     "@babel/core": "^7.2.0",
     "@babel/preset-env": "^7.2.0",
-    "@syndicate-lang/syntax": "0.0.21"
+    "@syndicate-lang/syntax": "^0.0.22"
   },
   "dependencies": {
-    "@syndicate-lang/core": "0.0.19",
-    "@syndicate-lang/driver-streams-node": "0.0.1",
-    "@syndicate-lang/driver-timer": "0.0.20"
+    "@syndicate-lang/core": "^0.0.20",
+    "@syndicate-lang/driver-streams-node": "^0.0.2",
+    "@syndicate-lang/driver-timer": "^0.0.21"
   }
 }
diff --git a/packages/driver-streams-node/package.json b/packages/driver-streams-node/package.json
index 8c01b85..6aa572e 100644
--- a/packages/driver-streams-node/package.json
+++ b/packages/driver-streams-node/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@syndicate-lang/driver-streams-node",
-  "version": "0.0.1",
+  "version": "0.0.2",
   "description": "Node.js Readable/Writable/Duplex/Transform stream support for Syndicate/js",
   "main": "lib/index.js",
   "repository": "github:syndicate-lang/syndicate-js",
@@ -16,9 +16,9 @@
   "devDependencies": {
     "@babel/core": "^7.2.0",
     "@babel/preset-env": "^7.2.0",
-    "@syndicate-lang/syntax": "0.0.21"
+    "@syndicate-lang/syntax": "^0.0.22"
   },
   "dependencies": {
-    "@syndicate-lang/core": "0.0.19"
+    "@syndicate-lang/core": "^0.0.20"
   }
 }
diff --git a/packages/driver-timer/package.json b/packages/driver-timer/package.json
index 20556ab..b298781 100644
--- a/packages/driver-timer/package.json
+++ b/packages/driver-timer/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@syndicate-lang/driver-timer",
-  "version": "0.0.20",
+  "version": "0.0.21",
   "description": "Time and timer driver for Syndicate/js",
   "main": "lib/index.js",
   "repository": "github:syndicate-lang/syndicate-js",
@@ -16,9 +16,9 @@
   "devDependencies": {
     "@babel/core": "^7.2.0",
     "@babel/preset-env": "^7.2.0",
-    "@syndicate-lang/syntax": "0.0.21"
+    "@syndicate-lang/syntax": "^0.0.22"
   },
   "dependencies": {
-    "@syndicate-lang/core": "0.0.19"
+    "@syndicate-lang/core": "^0.0.20"
   }
 }
diff --git a/packages/driver-udp-node/package.json b/packages/driver-udp-node/package.json
index 996d054..461d353 100644
--- a/packages/driver-udp-node/package.json
+++ b/packages/driver-udp-node/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@syndicate-lang/driver-udp-node",
-  "version": "0.0.10",
+  "version": "0.0.11",
   "description": "UDP support for Syndicate/js on node.js",
   "main": "lib/index.js",
   "repository": "github:syndicate-lang/syndicate-js",
@@ -16,10 +16,10 @@
   "devDependencies": {
     "@babel/core": "^7.2.0",
     "@babel/preset-env": "^7.2.0",
-    "@syndicate-lang/syntax": "0.0.21"
+    "@syndicate-lang/syntax": "^0.0.22"
   },
   "dependencies": {
-    "@syndicate-lang/core": "0.0.19",
-    "@syndicate-lang/driver-timer": "0.0.20"
+    "@syndicate-lang/core": "^0.0.20",
+    "@syndicate-lang/driver-timer": "^0.0.21"
   }
 }
diff --git a/packages/driver-websocket/package.json b/packages/driver-websocket/package.json
index 9f5ad65..f6b3390 100644
--- a/packages/driver-websocket/package.json
+++ b/packages/driver-websocket/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@syndicate-lang/driver-websocket",
-  "version": "0.0.11",
+  "version": "0.0.12",
   "description": "WebSocket client support for Syndicate/js in the browser and on node.js",
   "main": "lib/index.js",
   "repository": "github:syndicate-lang/syndicate-js",
@@ -16,11 +16,11 @@
   "devDependencies": {
     "@babel/core": "^7.2.0",
     "@babel/preset-env": "^7.2.0",
-    "@syndicate-lang/syntax": "0.0.21"
+    "@syndicate-lang/syntax": "^0.0.22"
   },
   "dependencies": {
-    "@syndicate-lang/core": "0.0.19",
-    "@syndicate-lang/driver-timer": "0.0.20",
+    "@syndicate-lang/core": "^0.0.20",
+    "@syndicate-lang/driver-timer": "^0.0.21",
     "isomorphic-ws": "^4.0.1",
     "ws": "^6.1.2"
   }
diff --git a/packages/flappy-bird-demo/package.json b/packages/flappy-bird-demo/package.json
index d4071ac..f73e64e 100644
--- a/packages/flappy-bird-demo/package.json
+++ b/packages/flappy-bird-demo/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@syndicate-lang/flappy-bird-demo",
   "private": true,
-  "version": "0.0.9",
+  "version": "0.0.10",
   "homepage": "https://github.com/syndicate-lang/syndicate-js/tree/master/packages/flappy-bird-demo",
   "license": "GPL-3.0+",
   "repository": "github:syndicate-lang/syndicate-js",
@@ -11,12 +11,12 @@
     "@babel/plugin-syntax-jsx": "^7.2.0",
     "@babel/plugin-transform-react-jsx": "^7.2.0",
     "@babel/preset-env": "^7.2.0",
-    "@syndicate-lang/syntax": "0.0.21"
+    "@syndicate-lang/syntax": "^0.0.22"
   },
   "dependencies": {
-    "@syndicate-lang/core": "0.0.19",
-    "@syndicate-lang/driver-browser-ui": "0.0.17",
-    "@syndicate-lang/driver-timer": "0.0.20",
+    "@syndicate-lang/core": "^0.0.20",
+    "@syndicate-lang/driver-browser-ui": "^0.0.18",
+    "@syndicate-lang/driver-timer": "^0.0.21",
     "webpack": "^4.27.1",
     "webpack-cli": "^3.1.2"
   }
diff --git a/packages/syntax-playground/package.json b/packages/syntax-playground/package.json
index d572727..8ccf087 100644
--- a/packages/syntax-playground/package.json
+++ b/packages/syntax-playground/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@syndicate-lang/syntax-playground",
   "private": true,
-  "version": "0.0.23",
+  "version": "0.0.24",
   "homepage": "https://github.com/syndicate-lang/syndicate-js/tree/master/packages/syntax-playground",
   "license": "GPL-3.0+",
   "repository": "github:syndicate-lang/syndicate-js",
@@ -11,17 +11,17 @@
     "@babel/plugin-syntax-jsx": "^7.2.0",
     "@babel/plugin-transform-react-jsx": "^7.2.0",
     "@babel/preset-env": "^7.2.0",
-    "@syndicate-lang/syntax": "0.0.21"
+    "@syndicate-lang/syntax": "^0.0.22"
   },
   "dependencies": {
-    "@syndicate-lang/core": "0.0.19",
-    "@syndicate-lang/driver-browser-ui": "0.0.17",
-    "@syndicate-lang/driver-http-node": "0.0.16",
-    "@syndicate-lang/driver-mdns": "0.0.1",
-    "@syndicate-lang/driver-streams-node": "0.0.1",
-    "@syndicate-lang/driver-timer": "0.0.20",
-    "@syndicate-lang/driver-udp-node": "0.0.10",
-    "@syndicate-lang/driver-websocket": "0.0.11",
+    "@syndicate-lang/core": "^0.0.20",
+    "@syndicate-lang/driver-browser-ui": "^0.0.18",
+    "@syndicate-lang/driver-http-node": "^0.0.17",
+    "@syndicate-lang/driver-mdns": "^0.0.2",
+    "@syndicate-lang/driver-streams-node": "^0.0.2",
+    "@syndicate-lang/driver-timer": "^0.0.21",
+    "@syndicate-lang/driver-udp-node": "^0.0.11",
+    "@syndicate-lang/driver-websocket": "^0.0.12",
     "webpack": "^4.27.1",
     "webpack-cli": "^3.1.2"
   }
diff --git a/packages/syntax/package.json b/packages/syntax/package.json
index 9d27aa5..3c7f03d 100644
--- a/packages/syntax/package.json
+++ b/packages/syntax/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@syndicate-lang/syntax",
-  "version": "0.0.21",
+  "version": "0.0.22",
   "homepage": "https://github.com/syndicate-lang/syndicate-js/tree/master/packages/syntax",
   "license": "GPL-3.0+",
   "publishConfig": {