diff --git a/docs/changes/2026-05-15-fetchcontent-cache/README.md b/docs/_archive/2026-05/2026-05-15-fetchcontent-cache/README.md
similarity index 99%
rename from docs/changes/2026-05-15-fetchcontent-cache/README.md
rename to docs/_archive/2026-05/2026-05-15-fetchcontent-cache/README.md
index 7b9a8ab29..3e8e399de 100644
--- a/docs/changes/2026-05-15-fetchcontent-cache/README.md
+++ b/docs/_archive/2026-05/2026-05-15-fetchcontent-cache/README.md
@@ -1,6 +1,6 @@
 # Change: actions/cache for FetchContent on DTVM CI
 
-- **Status**: Proposed
+- **Status**: Implemented
 - **Date**: 2026-05-15
 - **Tier**: Light
 - **Branch**: ci/fetchcontent-cache (continues commit `96707a2`)
diff --git a/docs/_archive/README.md b/docs/_archive/README.md
index 955f3a5ba..31fe9cd9e 100644
--- a/docs/_archive/README.md
+++ b/docs/_archive/README.md
@@ -25,6 +25,7 @@ All entries follow the `YYYY-MM/short-name/` convention, grouped by the month th
 | 2026-02 | add-jit-suitability-checker| JIT suitability checker for EVM      |
 | 2026-03 | add-evm-jit-fallback       | EVM JIT fallback mechanism           |
 | 2026-04 | update-evm-memory-block-precheck | EVM block-local memory precheck optimization |
+| 2026-05 | 2026-05-15-fetchcontent-cache | actions/cache for FetchContent + boost mirror swap |
 
 ## Notes