diff --git a/prel b/prel
index 69f4bd5..ac9a7ff 100755
--- a/prel
+++ b/prel
@@ -125,6 +125,7 @@ function show_summary() {
 
 function format_md() {
     awk '
+$0 == "" || $0 ~ /^#/ { print; next }
 $1 == "+" {
   $1 = "*"
   $2 = "`" $2 "`"
@@ -177,6 +178,7 @@ parse_opts "${PRETTYOPTS[@]}" \
     -s,--summary action=summary \
     -l,--log '$action=diff; log=1' \
     -d,--diff '$action=diff; diff=1' \
+    --upgrade-changes,--uc action=upgrade-changes \
     @ args -- "$@" && set -- "${args[@]}" || die "$args"
 
 if [ "$action" == auto ]; then
@@ -196,6 +198,14 @@ if [ -n "$projdir" ]; then
     cd "$projdir" || die
 fi
 
+if [ "$action" == upgrade-changes ]; then
+    [ -f CHANGES.txt ] || die "CHANGES.txt: fichier introuvable"
+    format_md <CHANGES.txt >CHANGES.md || die
+    rm CHANGES.txt
+    enote "Conversion CHANGES.txt --> CHANGES.md effectuée"
+    exit 0
+fi
+
 git_ensure_gitvcs
 
 push_branches=()