diff --git a/sdk_container/src/third_party/coreos-overlay/changelog/changes/2023-03-09-pigz.md b/sdk_container/src/third_party/coreos-overlay/changelog/changes/2023-03-09-pigz.md
index 4628fdb6bd..f5457e2a49 100644
--- a/sdk_container/src/third_party/coreos-overlay/changelog/changes/2023-03-09-pigz.md
+++ b/sdk_container/src/third_party/coreos-overlay/changelog/changes/2023-03-09-pigz.md
@@ -1 +1 @@
-- Added pigz to the production image. The parallel gzip implementation is useful to speed up the decompression time spent for large container image imports/exports.
+- Added `pigz` to the image, a parallel gzip implementation, which is useful to speed up the (de)compression for large container image imports/exports ([coreos-overlay#2504](https://github.com/flatcar/coreos-overlay/pull/2504))