diff --git a/playground/package-lock.json b/playground/package-lock.json
index b809b1f..04ea134 100644
--- a/playground/package-lock.json
+++ b/playground/package-lock.json
@@ -10,7 +10,7 @@
       "dependencies": {
         "monaco-editor": "^0.55.0",
         "remote-web-worker": "^0.0.9",
-        "vscode-jsonrpc": "^8.2.1",
+        "vscode-jsonrpc": "^9.0.0",
         "vscode-languageserver-protocol": "^3.17.5"
       },
       "devDependencies": {
@@ -964,9 +964,9 @@
       }
     },
     "node_modules/vscode-jsonrpc": {
-      "version": "8.2.1",
-      "resolved": "https://registry.npmjs.org/vscode-jsonrpc/-/vscode-jsonrpc-8.2.1.tgz",
-      "integrity": "sha512-kdjOSJ2lLIn7r1rtrMbbNCHjyMPfRnowdKjBQ+mGq6NAW5QY2bEZC/khaC5OR8svbbjvLEaIXkOq45e2X9BIbQ==",
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/vscode-jsonrpc/-/vscode-jsonrpc-9.0.0.tgz",
+      "integrity": "sha512-+VvMmQPJhtvJ+8O+zu2JKIRiLxXF8NW7krWgyMGeOHrp4Cn23T5hc0v2LknNeopDOB70wghHAds7mKtcZ0I4Sg==",
       "license": "MIT",
       "engines": {
         "node": ">=14.0.0"
diff --git a/playground/package.json b/playground/package.json
index c450534..92a79d0 100644
--- a/playground/package.json
+++ b/playground/package.json
@@ -12,7 +12,7 @@
   "dependencies": {
     "monaco-editor": "^0.55.0",
     "remote-web-worker": "^0.0.9",
-    "vscode-jsonrpc": "^8.2.1",
+    "vscode-jsonrpc": "^9.0.0",
     "vscode-languageserver-protocol": "^3.17.5"
   },
   "devDependencies": {