diff --git a/shell_docker_compose_update.sh b/shell_docker_compose_update.sh
index a24c0cc..2d7dcf1 100644
--- a/shell_docker_compose_update.sh
+++ b/shell_docker_compose_update.sh
@@ -196,6 +196,10 @@ wait_for_healthy() {
     done
 }
 
+format_hash() {
+  echo "$1" | sed 's/./&\u200B/g'
+}
+
 get_remote_digest() {
     local image="$1"
 
@@ -466,6 +470,8 @@ while IFS= read -r -d '' file; do
                 fi
 
                 if [ "$NTFY_SHOW_VERSIONS" = true ]; then
+                    before=$(format_hash "$before")
+                    after=$(format_hash "$after")
                     stack_block+=$'\n'"$prefix $svc ($before → $after)"
                 else
                     stack_block+=$'\n'"$prefix $svc"