diff --git a/curriculum/challenges/english/04-data-visualization/d3-dashboard/part-04.md b/curriculum/challenges/english/04-data-visualization/d3-dashboard/part-004.md similarity index 100% rename from curriculum/challenges/english/04-data-visualization/d3-dashboard/part-04.md rename to curriculum/challenges/english/04-data-visualization/d3-dashboard/part-004.md diff --git a/curriculum/challenges/english/04-data-visualization/d3-dashboard/part-0074.md b/curriculum/challenges/english/04-data-visualization/d3-dashboard/part-074.md similarity index 100% rename from curriculum/challenges/english/04-data-visualization/d3-dashboard/part-0074.md rename to curriculum/challenges/english/04-data-visualization/d3-dashboard/part-074.md diff --git a/curriculum/challenges/english/04-data-visualization/d3-dashboard/part-129..md b/curriculum/challenges/english/04-data-visualization/d3-dashboard/part-129.md similarity index 100% rename from curriculum/challenges/english/04-data-visualization/d3-dashboard/part-129..md rename to curriculum/challenges/english/04-data-visualization/d3-dashboard/part-129.md