diff --git a/.gitea/workflows/base-build.yml b/.gitea/workflows/base-build.yml
index 60bec72..3511a83 100644
--- a/.gitea/workflows/base-build.yml
+++ b/.gitea/workflows/base-build.yml
@@ -74,11 +74,19 @@ jobs:
           cd upload-repo
           git fetch --tags
 
+          # Get last tag, or fallback to first commit
           last_tag=$(git describe --tags --abbrev=0 2>/dev/null || git rev-list --max-parents=0 HEAD)
 
           for version in buster bullseye bookworm docker-build; do
-            echo "[INFO] Generating CHANGES.md for $version"
-            git log --pretty=format:"- %s" "$last_tag"..HEAD -- "$version/" > "$version/CHANGES.md"
+            changelog_path="$version/CHANGES.md"
+            mkdir -p "$version"
+
+            echo "[INFO] Appending to CHANGES.md for $version"
+            {
+              echo ""
+              echo "### Changes as of $(date -u +'%Y-%m-%dT%H:%M:%SZ')"
+              git log --pretty=format:"- %s" "$last_tag"..HEAD -- "$version/"
+            } >> "$changelog_path"
           done
 
       - name: Commit and push archives if changed