diff --git a/_data/collection-index.yml b/_data/collection-index.yml
index 5eb70333..38e4b624 100644
--- a/_data/collection-index.yml
+++ b/_data/collection-index.yml
@@ -1601,3 +1601,8 @@
   contact: https://github.com/zafnz/devcontainer-features/issues
   repository: https://github.com/zafnz/devcontainer-features
   ociReference: ghcr.io/zafnz/devcontainer-features
+- name: ESP-IDF Dev Container Templates
+  maintainer: T0ng5
+  contact: https://github.com/T0ng5/esp-idf/issues
+  repository: https://github.com/T0ng5/esp-idf
+  ociReference: ghcr.io/t0ng5/esp-idf
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