diff --git a/dev/index.ts b/dev/index.ts
index 7525bec0..b7300af4 100644
--- a/dev/index.ts
+++ b/dev/index.ts
@@ -2,7 +2,7 @@ import * as express from "express";
 import * as path from "path";
 import * as fs from "fs";
 import * as morgan from "morgan";
-import opn = require("opn");
+import open = require("open");
 import { AddressInfo } from "net";
 
 const basePath = process.env.APP_BASE_PATH ?
@@ -26,9 +26,13 @@ app.use(`${basePath}plugins`, express.static(path.resolve("../dist/plugins"), {
 // Fallback for HTML 5 routing
 app.use(`${basePath}*`, (req, res) => res.sendFile(path.resolve("../dist/index.html")));
 
-let server = app.listen(Number(process.env.PORT) || 3000, process.env.HOST || "127.0.0.1", () => {
+let server = app.listen(Number(process.env.PORT) || 3000, process.env.HOST || "127.0.0.1", async () => {
     let address = server.address() as AddressInfo;
     process.stdout.write(`Listening on ${address.address + ":" + address.port}\n`);
 
-    opn(`http://localhost:${address.port}${basePath}`);
+    try {
+        await open(`http://localhost:${address.port}${basePath}`);
+    } catch (e) {
+        process.stderr.write(`\nFailed to open web browser. You can open it yourself and ignore this error. ${e}`);
+    }
 });
diff --git a/dev/package-lock.json b/dev/package-lock.json
index a6100789..83275723 100644
--- a/dev/package-lock.json
+++ b/dev/package-lock.json
@@ -360,9 +360,9 @@
       "integrity": "sha1-4/o1e3c9phnybpXwSdBVxyeW+Gs="
     },
     "is-wsl": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/is-wsl/-/is-wsl-1.1.0.tgz",
-      "integrity": "sha1-HxbkqiKwTRM2tmGIpmrzxgDDpm0="
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/is-wsl/-/is-wsl-2.1.1.tgz",
+      "integrity": "sha512-umZHcSrwlDHo2TGMXv0DZ8dIUGunZ2Iv68YZnrmCiBPkZ4aaOhtv7pXJKeki9k3qJ3RJr0cDyitcl5wEH3AYog=="
     },
     "jsonc-parser": {
       "version": "2.0.3",
@@ -462,12 +462,12 @@
       "resolved": "https://registry.npmjs.org/on-headers/-/on-headers-1.0.2.tgz",
       "integrity": "sha512-pZAE+FJLoyITytdqK0U5s+FIpjN0JP3OzFi/u8Rx+EV5/W+JTWGXG8xFzevE7AjBfDqHv/8vL8qQsIhHnqRkrA=="
     },
-    "opn": {
-      "version": "5.3.0",
-      "resolved": "https://registry.npmjs.org/opn/-/opn-5.3.0.tgz",
-      "integrity": "sha1-ZIcVZchjh18FLP31PT48ta21Oxw=",
+    "open": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/open/-/open-7.0.0.tgz",
+      "integrity": "sha512-K6EKzYqnwQzk+/dzJAQSBORub3xlBTxMz+ntpZpH/LyCa1o6KjXhuN+2npAaI9jaSmU3R1Q8NWf4KUWcyytGsQ==",
       "requires": {
-        "is-wsl": "^1.1.0"
+        "is-wsl": "^2.1.0"
       }
     },
     "parseurl": {
diff --git a/dev/package.json b/dev/package.json
index 6aa21675..ad0edc72 100644
--- a/dev/package.json
+++ b/dev/package.json
@@ -16,7 +16,7 @@
     "express": "^4.16.3",
     "jsonc-parser": "^2.0.3",
     "morgan": "^1.9.1",
-    "opn": "^5.3.0",
+    "open": "^7.0.0",
     "ts-node": "^6.1.0",
     "typescript": "^3.0.1"
   }