diff --git a/cli/package.json b/cli/package.json
index 876556becc..0d3385e796 100644
--- a/cli/package.json
+++ b/cli/package.json
@@ -1,37 +1,39 @@
 {
-  "name": "devicescript-cli",
-  "version": "1.0.1",
-  "description": "DeviceScript command line tool",
-  "keywords": [
-    "devicescript",
-    "jacdac",
-    "iot",
-    "embedded"
-  ],
-  "author": "Microsoft",
-  "bin": {
-    "devicescript": "./devicescript",
-    "devicescript-cli": "./devicescript",
-    "devsc": "./devicescript"
-  },  
-  "files": [
-    "./devicescript",
-    "./built/devicescript-cli.cjs",
-    "buffer",
-    "README.md"
-  ],
-  "license": "MIT",
-  "devDependencies": {
-    "@types/commander": "^2.12.2",
-    "@types/debounce-promise": "^3.1.5",
-    "@types/fs-extra": "^9.0.13",
-    "@types/node": "^18.11.9"
-  },
-  "dependencies": {
-    "commander": "^9.4.1",
-    "debounce-promise": "^3.1.2",
-    "devicescript-compiler": "*",
-    "faye-websocket": "^0.11.4",
-    "fs-extra": "^10.1.0"
-  }
+    "name": "devicescript-cli",
+    "version": "1.0.1",
+    "description": "DeviceScript command line tool",
+    "keywords": [
+        "devicescript",
+        "jacdac",
+        "iot",
+        "embedded"
+    ],
+    "author": "Microsoft",
+    "bin": {
+        "devicescript": "./devicescript",
+        "devicescript-cli": "./devicescript",
+        "devsc": "./devicescript"
+    },
+    "files": [
+        "./devicescript",
+        "./built/devicescript-cli.cjs",
+        "buffer",
+        "README.md"
+    ],
+    "license": "MIT",
+    "devDependencies": {
+        "@types/commander": "^2.12.2",
+        "@types/debounce-promise": "^3.1.5",
+        "@types/fs-extra": "^9.0.13",
+        "@types/node": "^18.11.9"
+    },
+    "dependencies": {
+        "devicescript-compiler": "*",
+        "devicescript-vm": "*",
+        "commander": "^9.4.1",
+        "debounce-promise": "^3.1.2",
+        "faye-websocket": "^0.11.4",
+        "fs-extra": "^10.1.0",
+        "websocket-polyfill": "^0.0.3"
+    }
 }
diff --git a/compiler/src/compiler.ts b/compiler/src/compiler.ts
index aa7f456fc4..e6940e30fb 100644
--- a/compiler/src/compiler.ts
+++ b/compiler/src/compiler.ts
@@ -73,8 +73,8 @@ export const JD_SERIAL_MAX_PAYLOAD_SIZE = 236
 export const CMD_GET_REG = 0x1000
 export const CMD_SET_REG = 0x2000
 
-export const DEVS_ASSEMBLY_FILE = "prog.jasm"
-export const DEVS_BYTECODE_FILE = "prog.jacs"
+export const DEVS_ASSEMBLY_FILE = "bytecode.dasm"
+export const DEVS_BYTECODE_FILE = "bytecode.devs"
 
 class Cell {
     _index: number
diff --git a/runtime/devicescript-vm/runner.js b/runtime/devicescript-vm/runner.js
index b4cc8f926d..ca9238ee64 100644
--- a/runtime/devicescript-vm/runner.js
+++ b/runtime/devicescript-vm/runner.js
@@ -3,13 +3,13 @@ function mymain(m) {
         .then(() => {
             m.jacsSetDeviceId("1989f4eee0ebe206")
             m.jacsStart()
-            fetch("built/prog.jacs")
+            fetch("built/bytecode.dacs")
                 .then(r => {
                     if (r.status == 200)
                         r.arrayBuffer()
                             .then(v => m.jacsDeploy(new Uint8Array(v)))
                     else
-                        console.log("you can copy or symlink built/prog.jacs to devicescript-vm/built/prog.jacs to pre-load it here")
+                        console.log("you can copy or symlink built/bytecode.dacs to devicescript-vm/built/bytecode.dacs to pre-load it here")
                 })
         }, err => {
             console.log("failed to connect to devtools; please run 'jacdac devtools' in console")