diff --git a/_data/collection-index.yml b/_data/collection-index.yml
index 1b8ee1e9..18613d1f 100644
--- a/_data/collection-index.yml
+++ b/_data/collection-index.yml
@@ -338,11 +338,6 @@
   contact: https://github.com/ksh5022/devcontainer-features/issues
   repository: https://github.com/ksh5022/devcontainer-features
   ociReference: ghcr.io/ksh5022/devcontainer-features
-- name: GMkonan devcontainer features
-  maintainer: GMkonan
-  contact: https://github.com/GMkonan/feature/issues
-  repository: https://github.com/GMkonan/feature
-  ociReference: ghcr.io/gmkonan/feature
 - name: Dapr devcontainer features
   maintainer: Dapr maintainers
   contact: https://github.com/dapr/cli/issues