diff --git a/terminus-terminal/package.json b/terminus-terminal/package.json
index adf7d446..6129f71c 100644
--- a/terminus-terminal/package.json
+++ b/terminus-terminal/package.json
@@ -28,12 +28,12 @@
     "slugify": "^1.4.0",
     "uuid": "^7.0.1",
     "xterm": "^4.5.0-beta.9",
-    "xterm-addon-fit": "^0.4.0-beta2",
+    "xterm-addon-fit": "^0.4.0-beta.8",
     "xterm-addon-ligatures": "^0.2.1",
-    "xterm-addon-search": "^0.5.0",
-    "xterm-addon-serialize": "^0.2.0",
-    "xterm-addon-unicode11": "^0.1.1",
-    "xterm-addon-webgl": "^0.7.0-beta.4",
+    "xterm-addon-search": "^0.7.0-beta.1",
+    "xterm-addon-serialize": "^0.3.0-beta.3",
+    "xterm-addon-unicode11": "^0.2.0-beta.5",
+    "xterm-addon-webgl": "^0.7.0-beta.5",
     "zmodem.js": "^0.1.9"
   },
   "peerDependencies": {
diff --git a/terminus-terminal/src/frontends/xtermFrontend.ts b/terminus-terminal/src/frontends/xtermFrontend.ts
index 6ae39e5a..acb92d9a 100644
--- a/terminus-terminal/src/frontends/xtermFrontend.ts
+++ b/terminus-terminal/src/frontends/xtermFrontend.ts
@@ -122,8 +122,8 @@ export class XTermFrontend extends Frontend {
             keyboardEventHandler('keyup', e)
         }
 
-        this.xtermCore._bufferService.buffers.onBufferActivate(e => {
-            const altBufferActive = e.activeBuffer === this.xtermCore._bufferService.buffers.alt
+        this.xterm.buffer.onBufferChange(() => {
+            const altBufferActive = this.xterm.buffer.active === this.xterm.buffer.alternate
             this.alternateScreenActive.next(altBufferActive)
         })
     }
@@ -311,7 +311,7 @@ export class XTermFrontend extends Frontend {
     private getLineAsHTML (y: number, start: number, end: number): string {
         let html = '<div>'
         let lastStyle: string|null = null
-        const line = (this.xterm.buffer.getLine(y) as any)._line
+        const line = (this.xterm.buffer.active.getLine(y) as any)._line
         const cell = new CellData()
         for (let i = start; i < end; i++) {
             line.loadCell(i, cell)
diff --git a/terminus-terminal/yarn.lock b/terminus-terminal/yarn.lock
index 34983c51..689d1226 100644
--- a/terminus-terminal/yarn.lock
+++ b/terminus-terminal/yarn.lock
@@ -224,7 +224,7 @@ uuid@^7.0.1:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-7.0.1.tgz#95ed6ff3d8c881cbf85f0f05cc3915ef994818ef"
   integrity sha512-yqjRXZzSJm9Dbl84H2VDHpM3zMjzSJQ+hn6C4zqd5ilW+7P4ZmLEEqwho9LjP+tGuZlF4xrHQXT0h9QZUS/pWA==
 
-xterm-addon-fit@^0.4.0-beta2:
+xterm-addon-fit@^0.4.0-beta.8:
   version "0.4.0-beta2"
   resolved "https://registry.yarnpkg.com/xterm-addon-fit/-/xterm-addon-fit-0.4.0-beta2.tgz#c638ea7d41c55b535825f41b1cdb7358a94dfca4"
   integrity sha512-7EHWk8SPCmKuw9ux1mFek2SfBw1QjJ/ObYA87tubOtJi7mAZ0eIb9IE5ditcma9Nyz/cR/ROQQxoRn4UbDvyfA==
@@ -237,25 +237,25 @@ xterm-addon-ligatures@^0.2.1:
     font-finder "^1.0.4"
     font-ligatures "^1.3.2"
 
-xterm-addon-search@^0.5.0:
-  version "0.5.0"
-  resolved "https://registry.yarnpkg.com/xterm-addon-search/-/xterm-addon-search-0.5.0.tgz#cd3a2f8056084c28e236d4e732da37682010bcc2"
-  integrity sha512-zLVqVTrg5w2nk9fRj3UuVKCPo/dmFe/cLf3EM9Is5Dm6cgOoXmeo9eq2KgD8A0gquAflTFTf0ya2NaFmShHwyg==
+xterm-addon-search@^0.7.0-beta.1:
+  version "0.7.0-beta.1"
+  resolved "https://registry.yarnpkg.com/xterm-addon-search/-/xterm-addon-search-0.7.0-beta.1.tgz#9178c14ae13062cc42a620e02ecbf511940ddc32"
+  integrity sha512-D/CnYl6s3bGTdqvB+AFO5DbPQiM+loZ2rQas1LVWCk0qkbu5aef4rkK0OpIGQJUrGh9Y2mnrZk7p4SDeTSurzA==
 
-xterm-addon-serialize@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/xterm-addon-serialize/-/xterm-addon-serialize-0.2.0.tgz#7ef470d54aa44fb1dd5728dea3034001ef81dee4"
-  integrity sha512-c/wAsSeuD4c43h2Oto6R6gT32KCdZwkIemePKIo9Gq9myRT/B+Fae3Sg7idejo23lxvttMckgijpOlp0V13YRA==
+xterm-addon-serialize@^0.3.0-beta.3:
+  version "0.3.0-beta.3"
+  resolved "https://registry.yarnpkg.com/xterm-addon-serialize/-/xterm-addon-serialize-0.3.0-beta.3.tgz#43e069fdb0e7e84cb1da79bf596099ff02885904"
+  integrity sha512-avgc1LcuIZrLQm96USogysIsOmcrmT1Kb4jAu5GHFM8Y8Z35AHFuIYRg7b2RQQFJb7PKQ3y5Ki6UE0PuFZMMDg==
 
-xterm-addon-unicode11@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/xterm-addon-unicode11/-/xterm-addon-unicode11-0.1.1.tgz#b209ef137db38096f68636af4ef4d0c0acba85ad"
-  integrity sha512-z6vJTL+dpNljwAYzYoyDjJP8A2XjZuEosl0sRa+FGRf3jEyEVWquDM53MfUd1ztVdAPQ839qR6eYK1BXV04Bhw==
+xterm-addon-unicode11@^0.2.0-beta.5:
+  version "0.2.0-beta.5"
+  resolved "https://registry.yarnpkg.com/xterm-addon-unicode11/-/xterm-addon-unicode11-0.2.0-beta.5.tgz#5961850162df20b5e966166423cd6957ac2db298"
+  integrity sha512-IjnbBcyfS5JgJDXPO0W2nk/VBtGwx6GWE2snMC676z4DmAABUqPXfTzJKfUoWqoT6UcbxB0oIjDzykCfoRJp6Q==
 
-xterm-addon-webgl@^0.7.0-beta.4:
-  version "0.7.0-beta.4"
-  resolved "https://registry.yarnpkg.com/xterm-addon-webgl/-/xterm-addon-webgl-0.7.0-beta.4.tgz#9e271fc53c2665327cfd544f42c548dbe6a46cb7"
-  integrity sha512-Amn55OXI3bSuVQU4WCCVkyXN8nLxVFVpbolqWP72XE9w576oOCwEmJ//zIiV27FT/nJGx7BcfTxQPKX9eYnQNw==
+xterm-addon-webgl@^0.7.0-beta.5:
+  version "0.7.0-beta.5"
+  resolved "https://registry.yarnpkg.com/xterm-addon-webgl/-/xterm-addon-webgl-0.7.0-beta.5.tgz#20fbafcf2fb2c2438977c40fd41945d297ea0c25"
+  integrity sha512-Mf0PYiWe4GL8mcS4KnjVsosbvD2xSxUCappbTRNZ+5hQgmrayrr6UciKw7CasSLOsji8AHkoZJEl0MxMsTTEeg==
 
 xterm@^4.5.0-beta.9:
   version "4.5.0"