diff --git a/package.json b/package.json
index dc849591..9c37a75f 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,8 @@
     "virtualWorkspaces": true
   },
   "activationEvents": [
-    "onLanguage:yaml"
+    "onLanguage:yaml",
+    "onLanguage:dockercompose"
   ],
   "keywords": [
     "kubernetes",
diff --git a/src/extension.ts b/src/extension.ts
index 99b33718..37e2cc97 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -107,7 +107,7 @@ export function startClient(
   // Options to control the language client
   const clientOptions: LanguageClientOptions = {
     // Register the server for on disk and newly created YAML documents
-    documentSelector: [{ language: 'yaml' }],
+    documentSelector: [{ language: 'yaml' }, { language: 'dockercompose' }, { pattern: '*.y(a)ml' }],
     synchronize: {
       // Notify the server about file changes to YAML and JSON files contained in the workspace
       fileEvents: [workspace.createFileSystemWatcher('**/*.?(e)y?(a)ml'), workspace.createFileSystemWatcher('**/*.json')],