diff --git a/packages/vscode-tailwindcss/package.json b/packages/vscode-tailwindcss/package.json
index 55a312b..286a848 100755
--- a/packages/vscode-tailwindcss/package.json
+++ b/packages/vscode-tailwindcss/package.json
@@ -327,6 +327,7 @@
     "color-name": "1.1.4",
     "concurrently": "7.0.0",
     "minimatch": "5.1.4",
+    "normalize-path": "3.0.0",
     "rimraf": "3.0.2",
     "vsce": "2.15.0",
     "vscode-languageclient": "8.0.2"
diff --git a/packages/vscode-tailwindcss/src/extension.ts b/packages/vscode-tailwindcss/src/extension.ts
index 4ad6e2b..b324b2c 100755
--- a/packages/vscode-tailwindcss/src/extension.ts
+++ b/packages/vscode-tailwindcss/src/extension.ts
@@ -44,6 +44,7 @@ import namedColors from 'color-name'
 import minimatch from 'minimatch'
 import { CONFIG_GLOB, CSS_GLOB } from 'tailwindcss-language-server/src/lib/constants'
 import braces from 'braces'
+import normalizePath from 'normalize-path'
 
 const colorNames = Object.keys(namedColors)
 
@@ -443,7 +444,7 @@ export async function activate(context: ExtensionContext) {
       documentSelector: languages.get(folder.uri.toString()).map((language) => ({
         scheme: 'file',
         language,
-        pattern: `${folder.uri.fsPath.replace(/[\[\]\{\}]/g, '?')}/**/*`,
+        pattern: normalizePath(`${folder.uri.fsPath.replace(/[\[\]\{\}]/g, '?')}/**/*`),
       })),
       diagnosticCollectionName: CLIENT_ID,
       workspaceFolder: folder,