diff --git a/playground/package-lock.json b/playground/package-lock.json
index 43b7cbe..620d9d6 100644
--- a/playground/package-lock.json
+++ b/playground/package-lock.json
@@ -8,7 +8,7 @@
       "name": "lsp-python-types-playground",
       "version": "0.0.0",
       "dependencies": {
-        "monaco-editor": "^0.52.2",
+        "monaco-editor": "^0.55.0",
         "remote-web-worker": "^0.0.9",
         "vscode-jsonrpc": "^8.2.1",
         "vscode-languageserver-protocol": "^3.17.5"
@@ -817,6 +817,22 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/trusted-types": {
+      "version": "2.0.7",
+      "resolved": "https://registry.npmjs.org/@types/trusted-types/-/trusted-types-2.0.7.tgz",
+      "integrity": "sha512-ScaPdn1dQczgbl0QFTeTOmVHFULt394XJgOQNoyVhZ6r2vLnMLJfBPd53SB52T/3G36VI1/g2MZaX0cwDuXsfw==",
+      "license": "MIT",
+      "optional": true
+    },
+    "node_modules/dompurify": {
+      "version": "3.2.7",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.2.7.tgz",
+      "integrity": "sha512-WhL/YuveyGXJaerVlMYGWhvQswa7myDG17P7Vu65EWC05o8vfeNbvNf4d/BOvH99+ZW+LlQsc1GDKMa1vNK6dw==",
+      "license": "(MPL-2.0 OR Apache-2.0)",
+      "optionalDependencies": {
+        "@types/trusted-types": "^2.0.7"
+      }
+    },
     "node_modules/esbuild": {
       "version": "0.25.12",
       "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.25.12.tgz",
@@ -892,11 +908,27 @@
         "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
       }
     },
+    "node_modules/marked": {
+      "version": "14.0.0",
+      "resolved": "https://registry.npmjs.org/marked/-/marked-14.0.0.tgz",
+      "integrity": "sha512-uIj4+faQ+MgHgwUW1l2PsPglZLOLOT1uErt06dAPtx2kjteLAkbsd/0FiYg/MGS+i7ZKLb7w2WClxHkzOOuryQ==",
+      "license": "MIT",
+      "bin": {
+        "marked": "bin/marked.js"
+      },
+      "engines": {
+        "node": ">= 18"
+      }
+    },
     "node_modules/monaco-editor": {
-      "version": "0.52.2",
-      "resolved": "https://registry.npmjs.org/monaco-editor/-/monaco-editor-0.52.2.tgz",
-      "integrity": "sha512-GEQWEZmfkOGLdd3XK8ryrfWz3AIP8YymVXiPHEdewrUq7mh0qrKrfHLNCXcbB6sTnMLnOZ3ztSiKcciFUkIJwQ==",
-      "license": "MIT"
+      "version": "0.55.1",
+      "resolved": "https://registry.npmjs.org/monaco-editor/-/monaco-editor-0.55.1.tgz",
+      "integrity": "sha512-jz4x+TJNFHwHtwuV9vA9rMujcZRb0CEilTEwG2rRSpe/A7Jdkuj8xPKttCgOh+v/lkHy7HsZ64oj+q3xoAFl9A==",
+      "license": "MIT",
+      "dependencies": {
+        "dompurify": "3.2.7",
+        "marked": "14.0.0"
+      }
     },
     "node_modules/nanoid": {
       "version": "3.3.11",
@@ -930,6 +962,7 @@
       "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=12"
       },
diff --git a/playground/package.json b/playground/package.json
index de7ad59..1dac1b5 100644
--- a/playground/package.json
+++ b/playground/package.json
@@ -10,7 +10,7 @@
     "fetch-wasm": "bash fetch-wasm.sh"
   },
   "dependencies": {
-    "monaco-editor": "^0.52.2",
+    "monaco-editor": "^0.55.0",
     "remote-web-worker": "^0.0.9",
     "vscode-jsonrpc": "^8.2.1",
     "vscode-languageserver-protocol": "^3.17.5"