diff --git a/html/package.json b/html/package.json
index 822e2fb..9245018 100644
--- a/html/package.json
+++ b/html/package.json
@@ -66,7 +66,7 @@
     "file-saver": "^2.0.2",
     "preact": "^10.4.8",
     "whatwg-fetch": "^3.4.1",
-    "xterm": "^4.8.1",
+    "xterm": "^4.9.0",
     "xterm-addon-fit": "^0.4.0",
     "xterm-addon-web-links": "^0.4.0",
     "xterm-addon-webgl": "^0.8.0",
diff --git a/html/yarn.lock b/html/yarn.lock
index 5eee451..2cb5313 100644
--- a/html/yarn.lock
+++ b/html/yarn.lock
@@ -8701,10 +8701,10 @@ xterm-addon-webgl@^0.8.0:
   resolved "https://registry.yarnpkg.com/xterm-addon-webgl/-/xterm-addon-webgl-0.8.0.tgz#4bc6bb4dbfea5b0d2d7978d6c5cef922d584fb4f"
   integrity sha512-dlpYPsv0C9S6v6+T/h/d/otSbdUTizMJdxvSoS34tUpMOHev6iW7Zqt5KRFqYxl4vCqpDk9Wmhb3fKL3kwX5fQ==
 
-xterm@^4.8.1:
-  version "4.8.1"
-  resolved "https://registry.yarnpkg.com/xterm/-/xterm-4.8.1.tgz#155a1729a43e1a89b406524e22c5634339e39ca1"
-  integrity sha512-ax91ny4tI5eklqIfH79OUSGE2PUX2rGbwONmB6DfqpyhSZO8/cf++sqiaMWEVCMjACyMfnISW7C3gGMoNvNolQ==
+xterm@^4.9.0:
+  version "4.9.0"
+  resolved "https://registry.yarnpkg.com/xterm/-/xterm-4.9.0.tgz#7a4c097a433d565339b5533b468bbc60c6c87969"
+  integrity sha512-wGfqufmioctKr8VkbRuZbVDfjlXWGZZ1PWHy1yqqpGT3Nm6yaJx8lxDbSEBANtgaiVPTcKSp97sxOy5IlpqYfw==
 
 y18n@^3.2.1:
   version "3.2.1"