diff --git a/extension.js b/extension.js
index 6789a48..02e6a37 100644
--- a/extension.js
+++ b/extension.js
@@ -4,7 +4,8 @@ const vscode = require("vscode");
 
 const yamlformattedLanguages = [
   "yaml",
-  "github-actions-workflow" // Provided in https://github.com/github/vscode-github-actions
+  "github-actions-workflow", // Provided in https://github.com/github/vscode-github-actions
+  "dockercompose", // Provided in https://github.com/Microsoft/vscode-docker
 ];
 const provider = {
   provideDocumentFormattingEdits(document) {
diff --git a/package.json b/package.json
index c6762a0..6754ecf 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,8 @@
   ],
   "activationEvents": [
     "onLanguage:yaml",
-    "onLanguage:github-actions-workflow"
+    "onLanguage:github-actions-workflow",
+    "onLanguage:dockercompose"
   ],
   "main": "./extension.js",
   "contributes": {