diff --git a/Extension/package.json b/Extension/package.json
index 99b04f25c1..3625a21076 100644
--- a/Extension/package.json
+++ b/Extension/package.json
@@ -6590,7 +6590,7 @@
         "xml2js": "^0.6.2"
     },
     "dependencies": {
-        "@github/copilot-language-server": "^1.253.0",
+        "@github/copilot-language-server": "^1.266.0",
         "@vscode/extension-telemetry": "^0.9.6",
         "chokidar": "^3.6.0",
         "comment-json": "^4.2.3",
diff --git a/Extension/yarn.lock b/Extension/yarn.lock
index 0e8560c55c..db72a3379f 100644
--- a/Extension/yarn.lock
+++ b/Extension/yarn.lock
@@ -55,10 +55,10 @@
   resolved "https://pkgs.dev.azure.com/azure-public/VisualCpp/_packaging/cpp_PublicPackages/npm/registry/@eslint/js/-/js-8.57.1.tgz"
   integrity sha1-3mM9s+wu9qPIni8ZA4Bj6KEi4sI=
 
-"@github/copilot-language-server@^1.253.0":
-  version "1.253.0"
-  resolved "https://registry.npmjs.org/@github/copilot-language-server/-/copilot-language-server-1.253.0.tgz"
-  integrity sha512-a7GJLhLCQMcDtFv+V7+Y/7rfUtSrY1n2XIJQtSvvRuuEgmJr8tqoCyq+G7RUURwS7teAQ6QcAgTg0a3tJ/PmsA==
+"@github/copilot-language-server@^1.266.0":
+  version "1.266.0"
+  resolved "https://pkgs.dev.azure.com/azure-public/VisualCpp/_packaging/cpp_PublicPackages/npm/registry/@github/copilot-language-server/-/copilot-language-server-1.266.0.tgz#fbdbc4843a036e9f5b7c4f88024e17fa4bb8fb1d"
+  integrity sha1-+9vEhDoDbp9bfE+IAk4X+ku4+x0=
   dependencies:
     vscode-languageserver-protocol "^3.17.5"