diff --git a/webview-sample/package-lock.json b/webview-sample/package-lock.json
index c0326ee5..b8fa1c2c 100644
--- a/webview-sample/package-lock.json
+++ b/webview-sample/package-lock.json
@@ -48,6 +48,12 @@
 			"integrity": "sha512-8+KAKzEvSUdeo+kmqnKrqgeE+LcA0tjYWFY7RPProVYwnqDjukzO+3b6dLD56rYX5TdWejnEOLJYOIeh4CXKuA==",
 			"dev": true
 		},
+		"@types/node": {
+			"version": "12.19.3",
+			"resolved": "https://registry.npmjs.org/@types/node/-/node-12.19.3.tgz",
+			"integrity": "sha512-8Jduo8wvvwDzEVJCOvS/G6sgilOLvvhn1eMmK3TW8/T217O7u1jdrK6ImKLv80tVryaPSVeKu6sjDEiFjd4/eg==",
+			"dev": true
+		},
 		"@types/vscode": {
 			"version": "1.47.0",
 			"resolved": "https://registry.npmjs.org/@types/vscode/-/vscode-1.47.0.tgz",
diff --git a/webview-sample/package.json b/webview-sample/package.json
index 08a5045c..94664544 100644
--- a/webview-sample/package.json
+++ b/webview-sample/package.json
@@ -45,6 +45,7 @@
 		"@typescript-eslint/parser": "^3.0.2",
 		"eslint": "^7.1.0",
 		"typescript": "^4.0.2",
-		"@types/vscode": "^1.47.0"
+		"@types/vscode": "^1.47.0",
+		"@types/node": "^12.12.0"
 	}
 }