diff --git a/package.json b/package.json
index 56644bf..d10fc58 100644
--- a/package.json
+++ b/package.json
@@ -59,6 +59,11 @@
     "workspace"
   ],
   "main": "./build/material.theme.config",
+  "capabilities": {
+    "untrustedWorkspaces": {
+      "supported": true
+    }
+  },
   "contributes": {
     "commands": [
       {