diff --git a/addons/xterm-addon-attach/package.json b/addons/xterm-addon-attach/package.json
index 6a4fa464..5a5c5d75 100644
--- a/addons/xterm-addon-attach/package.json
+++ b/addons/xterm-addon-attach/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xterm-addon-attach",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "author": {
     "name": "The xterm.js authors",
     "url": "https://xtermjs.org/"
@@ -16,6 +16,6 @@
     "prepublishOnly": "npm run package"
   },
   "peerDependencies": {
-    "xterm": "^3.14.0"
+    "xterm": "^4.0.0"
   }
 }
diff --git a/addons/xterm-addon-fit/package.json b/addons/xterm-addon-fit/package.json
index 03a2c1e6..fa1bf852 100644
--- a/addons/xterm-addon-fit/package.json
+++ b/addons/xterm-addon-fit/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xterm-addon-fit",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "author": {
     "name": "The xterm.js authors",
     "url": "https://xtermjs.org/"
@@ -16,6 +16,6 @@
     "prepublishOnly": "npm run package"
   },
   "peerDependencies": {
-    "xterm": "^3.14.0"
+    "xterm": "^4.0.0"
   }
 }
diff --git a/addons/xterm-addon-search/package.json b/addons/xterm-addon-search/package.json
index 4438f418..c2e14032 100644
--- a/addons/xterm-addon-search/package.json
+++ b/addons/xterm-addon-search/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xterm-addon-search",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "author": {
     "name": "The xterm.js authors",
     "url": "https://xtermjs.org/"
@@ -16,6 +16,6 @@
     "prepublishOnly": "npm run package"
   },
   "peerDependencies": {
-    "xterm": "^3.14.0"
+    "xterm": "^4.0.0"
   }
 }
diff --git a/addons/xterm-addon-web-links/package.json b/addons/xterm-addon-web-links/package.json
index a6240abd..6167de74 100644
--- a/addons/xterm-addon-web-links/package.json
+++ b/addons/xterm-addon-web-links/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xterm-addon-web-links",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "author": {
     "name": "The xterm.js authors",
     "url": "https://xtermjs.org/"
@@ -16,6 +16,6 @@
     "prepublishOnly": "npm run package"
   },
   "peerDependencies": {
-    "xterm": "^3.14.0"
+    "xterm": "^4.0.0"
   }
 }
diff --git a/addons/xterm-addon-webgl/package.json b/addons/xterm-addon-webgl/package.json
index 378516d5..9a01aea0 100644
--- a/addons/xterm-addon-webgl/package.json
+++ b/addons/xterm-addon-webgl/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xterm-addon-webgl",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "author": {
     "name": "The xterm.js authors",
     "url": "https://xtermjs.org/"
@@ -16,6 +16,6 @@
     "prepublishOnly": "npm run package"
   },
   "peerDependencies": {
-    "xterm": "^3.14.0"
+    "xterm": "^4.0.0"
   }
 }
diff --git a/test/api/InputHandler.api.ts b/test/api/InputHandler.api.ts
index 9ca0c943..05b16010 100644
--- a/test/api/InputHandler.api.ts
+++ b/test/api/InputHandler.api.ts
@@ -196,6 +196,36 @@ describe('InputHandler Integration Tests', function(): void {
       assert.deepEqual(await getLinesAsArray(5), ['   4', '    5', 'abc', 'def', 'ghi']);
     });
 
+    it('IL: Insert Ps Line(s) (default = 1) - CSI Ps L', async function(): Promise<any> {
+      await page.evaluate(`
+        // Default
+        window.term.write('foo\x1b[La')
+        // Explicit
+        window.term.write('\x1b[2Lb')
+      `);
+      assert.deepEqual(await getLinesAsArray(4), ['b', '', 'a', 'foo']);
+    });
+
+    it('DL: Delete Ps Line(s) (default = 1) - CSI Ps M', async function(): Promise<any> {
+      await page.evaluate(`
+        // Default
+        window.term.write('a\\nb\x1b[1F\x1b[M')
+        // Explicit
+        window.term.write('\x1b[1Ed\\ne\\nf\x1b[2F\x1b[2M')
+      `);
+      assert.deepEqual(await getLinesAsArray(5), [' b', '  f', '', '', '']);
+    });
+
+    it('DCH: Delete Ps Character(s) (default = 1) - CSI Ps P', async function(): Promise<any> {
+      await page.evaluate(`
+        // Default
+        window.term.write('abc\x1b[1;1H\x1b[P')
+        // Explicit
+        window.term.write('\\n\\rdef\x1b[2;1H\x1b[2P')
+      `);
+      assert.deepEqual(await getLinesAsArray(2), ['bc', 'f']);
+    });
+
     describe('DSR: Device Status Report', () => {
       it('Status Report - CSI 5 n', async function(): Promise<any> {
         await page.evaluate(`