diff --git a/addons/xterm-addon-fit/package.json b/addons/xterm-addon-fit/package.json
index 859d6ebf..f9d96c4a 100644
--- a/addons/xterm-addon-fit/package.json
+++ b/addons/xterm-addon-fit/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xterm-addon-fit",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "author": {
     "name": "The xterm.js authors",
     "url": "https://xtermjs.org/"
diff --git a/addons/xterm-addon-ligatures/package.json b/addons/xterm-addon-ligatures/package.json
index a35cfc5c..4e2b4056 100644
--- a/addons/xterm-addon-ligatures/package.json
+++ b/addons/xterm-addon-ligatures/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xterm-addon-ligatures",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "Add support for programming ligatures to xterm.js",
   "author": {
     "name": "The xterm.js authors",
diff --git a/addons/xterm-addon-search/package.json b/addons/xterm-addon-search/package.json
index 711335cb..659bd834 100644
--- a/addons/xterm-addon-search/package.json
+++ b/addons/xterm-addon-search/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xterm-addon-search",
-  "version": "0.7.0",
+  "version": "0.8.0",
   "author": {
     "name": "The xterm.js authors",
     "url": "https://xtermjs.org/"
diff --git a/package.json b/package.json
index 819b3be3..91d9a646 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "xterm",
   "description": "Full xterm terminal, in your browser",
-  "version": "4.9.0",
+  "version": "4.10.0",
   "main": "lib/xterm.js",
   "style": "css/xterm.css",
   "types": "typings/xterm.d.ts",
diff --git a/src/browser/Terminal.ts b/src/browser/Terminal.ts
index 06ac57f3..b0964c21 100644
--- a/src/browser/Terminal.ts
+++ b/src/browser/Terminal.ts
@@ -386,7 +386,7 @@ export class Terminal extends CoreTerminal implements ITerminal {
       throw new Error('Terminal requires a parent element.');
     }
 
-    if (!document.body.contains(parent)) {
+    if (!parent.isConnected) {
       this._logService.debug('Terminal.open was called on an element that was not attached to the DOM');
     }