diff --git a/.github/scripts/release_snapshot.sh b/.github/scripts/release_snapshot.sh
index aa16d104f..a87ef1627 100755
--- a/.github/scripts/release_snapshot.sh
+++ b/.github/scripts/release_snapshot.sh
@@ -16,7 +16,7 @@ mv plantuml-sources.jar plantuml-SNAPSHOT-sources.jar
 cat <<-EOF >notes.txt
   This is a pre-release of the latest development work.
   ⚠️  **It is not ready for general use** ⚠️
-  ⏱  _Snapshot of $(date -Iseconds)_
+  ⏱  _Snapshot taken the $(date -u +"%F at %T (UTC)")_
 EOF
 
 gh release create --prerelease --target "${GITHUB_SHA}" --title "${TAG}" --notes-file notes.txt "${TAG}" \