diff --git a/packages/vscode-extension/package.json b/packages/vscode-extension/package.json
index 419513e..c104ce4 100644
--- a/packages/vscode-extension/package.json
+++ b/packages/vscode-extension/package.json
@@ -39,12 +39,17 @@
   },
   "main": "./dist/extension.js",
   "activationEvents": [
+    "onLanguage:json",
+    "onLanguage:jsonc",
+    "onLanguage:yaml",
+    "onLanguage:toml",
     "workspaceContains:**/package.json",
     "workspaceContains:**/deno.json",
     "workspaceContains:**/deno.jsonc",
     "workspaceContains:**/jsr.json",
     "workspaceContains:**/jsr.jsonc",
     "workspaceContains:**/import_map.json",
+    "workspaceContains:**/importMap.json",
     "workspaceContains:**/Cargo.toml",
     "workspaceContains:**/moon.mod",
     "workspaceContains:**/moon.mod.json"