diff --git a/package.json b/package.json
index b54e8a3..755fd4a 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,9 @@
     "Other"
   ],
   "activationEvents": [
-    "*"
+    "workspaceContains:**/*.s[ac]ss",
+    "onLanguage:scss",
+    "onLanguage:sass"
   ],
   "contributes": {
     "commands": [