diff --git a/extensions/html-language-features/.vscode/tasks.json b/extensions/html-language-features/.vscode/tasks.json
index 7bbb2d58733..7abfc71df26 100644
--- a/extensions/html-language-features/.vscode/tasks.json
+++ b/extensions/html-language-features/.vscode/tasks.json
@@ -2,9 +2,9 @@
 	"version": "2.0.0",
 	"tasks": [
 		{
-			"label": "npm",
-			"command": "npm",
-			"args": ["run", "compile"],
+			"label": "yarn",
+			"command": "yarn",
+			"args": ["compile"],
 			"type": "shell",
 			"presentation": {
 				"reveal": "silent",
@@ -15,4 +15,4 @@
 			"problemMatcher": "$tsc-watch"
 		}
 	],
-}
\ No newline at end of file
+}
diff --git a/extensions/html-language-features/CONTRIBUTING.md b/extensions/html-language-features/CONTRIBUTING.md
index 2d3476d3cf9..441baa4d318 100644
--- a/extensions/html-language-features/CONTRIBUTING.md
+++ b/extensions/html-language-features/CONTRIBUTING.md
@@ -30,7 +30,7 @@ However, within this extension, you can run a development version of `vscode-htm
 - Clone [microsoft/vscode-html-languageservice](https://github.com/microsoft/vscode-html-languageservice)
 - Run `yarn` in `vscode-html-languageservice`
 - Run `yarn link` in `vscode-html-languageservice`. This will compile and link `vscode-html-languageservice`
-- In `html-language-features/server/`, run `npm link vscode-html-languageservice`
+- In `html-language-features/server/`, run `yarn link vscode-html-languageservice`
 
 #### Testing the development version of `vscode-html-languageservice`
 
diff --git a/extensions/html-language-features/server/.vscode/tasks.json b/extensions/html-language-features/server/.vscode/tasks.json
index 8bca03bcb8c..c26073e1d4f 100644
--- a/extensions/html-language-features/server/.vscode/tasks.json
+++ b/extensions/html-language-features/server/.vscode/tasks.json
@@ -2,9 +2,9 @@
 	"version": "2.0.0",
 	"tasks": [
 		{
-			"label": "npm watch",
-			"command": "npm",
-			"args": ["run", "watch"],
+			"label": "yarn watch",
+			"command": "yarn",
+			"args": ["watch"],
 			"type": "shell",
 			"presentation": {
 				"reveal": "silent",
@@ -15,4 +15,4 @@
 			"problemMatcher": "$tsc-watch"
 		}
 	],
-}
\ No newline at end of file
+}
diff --git a/extensions/html-language-features/server/package.json b/extensions/html-language-features/server/package.json
index 264cd1c2c25..48f4c0f6259 100644
--- a/extensions/html-language-features/server/package.json
+++ b/extensions/html-language-features/server/package.json
@@ -27,6 +27,6 @@
     "install-service-local": "yarn link vscode-css-languageservice && yarn link vscode-html-languageservice",
     "install-server-next": "yarn add vscode-languageserver@next",
     "install-server-local": "yarn link vscode-languageserver",
-    "test": "npm run compile && node ./test/index.js"
+    "test": "yarn compile && node ./test/index.js"
   }
 }